QNAP TS-451DeU-2G 1U Rackmount NAS - 4-Bay, Celeron J4125 4C 2.0GHz, 4GB RAM, 2x 2.5GbE, Short Depth (295mm)

QNAP TS-451DeU-2G 1U Rackmount NAS - 4-Bay, Celeron J4125 4C 2.0GHz, 4GB RAM, 2x 2.5GbE, Short Depth (295mm)
AUD $1,049 35 AUD $1,049 35

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QNAP TS-451DeU-2G 1U Rackmount NAS - 4-Bay, Celeron J4125 4C 2.0GHz, 4GB RAM, 2x 2.5GbE, Short Depth (295mm)

Part #: NASQNP70147
AUD $1,049 35 $1,049 35

Delivery: Order now and it ships on 21/10/2021
Estimated Delivery Times
7 - 10 working days for international destinations

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  • Brand: QNAP
  • MPN: TS-451DeU-2G
  • Part #: NASQNP70147
  • UPC: 885022019021
  • Number of Bays: 4 Bays
  • Hard Drives Installed: None Included
  • Form Factor: 1U Rackmount
  • Number of Cores: 2
  • Processor Speed: 2000Mhz
  • Memory Size: 4GB
  • 1Gb RJ45 Ports: None
  • 10Gb RJ45 Ports: None
  • View more


QNAP TS-451DeU-2G 1U Rackmount NAS - 4-Bay

- Celeron J4125 4C 2.0GHz, 4GB RAM, 2x 2.5GbE, Short Depth (295mm)

1U short depth rackmount 2.5GbE NAS suited for small-to-midsize offices and audiovisual rooms

The compact and feature-rich TS-451DeU combines an Intel® Celeron® dual-core 2.0 GHz processor and 2.5GbE connectivity in one chassis, providing businesses with a modern 2.5GbE NAS solution to tackle everyday tasks like file backup/restore, and to boost team collaboration with higher productivity. The space-efficient short depth design makes it easy to install in small media cabinets or places with a lot of cabling. Supporting abundant business and media applications (including file sharing and sync, snapshot protection, virtual machines, cloud storage gateways, video streaming and real-time transcoding) alongside expandable storage capacity and install-on-demand apps, the TS-451DeU is an ideal cost-effective entry-level rackmount NAS.

Up to 5 Gbps transfer speeds can be made by setting port trunking with the two built-in 2.5GbE ports.


Dual M.2 2280 SATA 6Gb/s SSD slots allows tool-less SSD installation, and supports SSD caching to increase IOPS performance.


HBS provides comprehensive backup and data recovery; QuDedup deduplicates the data at the source to reduce storage space usage, bandwidth usage, and backup time.


Supports Plex® media server with hardware transcoding for an optimal multimedia experience.


Hosts multiple virtual machines and containers to run a wide range of applications on one NAS device.


Scale your storage capacity to fit growing data needs by connecting QNAP's expansion units.


Smaller footprint for bigger opportunities

Compared to a traditional 4-bay rackmount NAS, the compact TS-451DeU has a depth of only 11.57 inches (295 mm). This makes the TS-451DeU an excellent choice for smaller racks, and the unused space can be reserved for cabling or ventilation. The TS-451DeU is space-saving for flexible deployment and is especially suitable for multiple locations and applications including offices, audiovisual rooms, and security surveillance recording.
Note: Users can purchase the optional RAIL-B02 rail kit to deploy the TS-451DeU in a 19-inch rack following the ANSI/EIA-RS-310-D standard.


Dual-core 2.0 GHz (bursts up to 2.9 GHz) with AES-NI encryption acceleration

The TS-451DeU supports SATA 6 Gb/s drives and features a power-efficient Intel® Celeron® J4025 dual-core 2.0 GHz processor (bursts up to 2.9 GHz). There are two DDR4 SODIMM memory slots with 2 GB DDR4 memory as standard, but can be upgraded up to 8 GB. With Intel® AES-NI encryption engine, the TS-451DeU provides unmatched encryption performance with AES-256 bit encryption acceleration, boosting system performance while ensuring the safety of sensitive business data stored in the NAS.

Tested in QNAP Labs. Figures may vary by environment.

Test Environment:
NAS: TS-451DeU-2G
OS: QTS 4.4.2, MTU-9000
Volume type: Qtier, RAID 5: 4 x Seagate 1TB ES.3 HDD + RAID 1: 2 x Samsung 1TB M.2 860 EVO SSD
Client PC: Intel® Core TM i7-6700 3.40GHz CPU; 32GB RAM; Intel X550 NIC, MTU-9000; Windows® 10 Pro


Follow the Wi-Fi 6 trends and upgrade to a 2.5GbE NAS

The new-gen Wi-Fi 6 (802.11ax) trend has driven higher bandwidth demands for wired and wireless network connections. The TS-451DeU comes with two 2.5GbE RJ45 LAN ports that allow you to use existing CAT5e cables to upgrade network speeds from 1 Gigabit to 2.5 Gigabit. The dual 2.5GbE ports also support Port Trunking for up to 5 Gbps transmission speeds!


Future-proof your IT infrastructure for high-speed networks

QNAP provides comprehensive, budget-friendly storage and networking solutions, allowing you to easily and flexibly upgrade network environments for bandwidth-hungry applications.


SSD caching and auto-tiering optimize application performance

Besides using 2.5-inch SSDs for cache acceleration, the TS-451DeU features two M.2 SSD slots that enable you to install SATA 6Gb/s M.2 SSDs with 2280 form factors (sold separately). Coupled with QNAP's SSD-aware features, the TS-451DeU maximizes performance with high cost-effectiveness.


A secure file center supporting regular backups and snapshot protection

The TS-451DeU provides a reliable, flexible backup and disaster recovery solution to simplify routine backup jobs cost-efficiently and with high productivity.

Windows® and Mac® backup

Use the license-free QNAP NetBak Replicator utility to back up and restore files from Windows® computers. Apple's Time Machine® is supported for backing up Mac® computers.

Snapshots for Volume & LUN

Block-level snapshots are dependable data protection methods, especially in the face of growing encrypted virus threats. The TS-451DeU supports up to 32 snapshots per volume/LUN, and up to 64 snapshots per NAS. (Upgrading the TS-451DeU to over 4 GB RAM will enable the support for more snapshots versions).

VM backup

The TS-451DeU is perfect for backing up virtual machines, with its high performance, huge storage capacities, integrated virtualization solutions, and snapshot support that records system status any time.


Increased HBS backup efficiency with 2.5GbE connectivity and deduplication

Hybrid Backup Sync (HBS) consolidates backup, restoration and synchronization functions (using RTRR, Rsync, FTP, CIFS/SMB) for easily transferring data in the TS-451DeU to local, remote and cloud storage spaces (including Microsoft One Drive®, Google Drive™, Dropbox®, and more) as a comprehensive data storage and disaster recovery plan. Supporting QuDedup technology that removes duplicate data at the source, HBS reduces backup data size and speeds up future backup tasks. This is also beneficial for accelerating multi-version backups for greater protection against data loss.


A multimedia server for video streaming and transcoding

The short depth TS-451DeU can be easily placed in a media cabinet. By installing Plex® Media Server from QTS App Center, you can stream media files stored on the TS-451DeU to mobiles and media streaming devices (including DLNA®, Roku®, Amazon Fire TV® and Google Chromecast™). The TS-451DeU also features advanced Intel® UHD Graphics 600 that supports hardware decoding and real-time transcoding, allowing you to convert videos to universal file formats that can be smoothly played on multiple devices. To have greater multimedia enjoyment, Cinema28 empowers your TS-451DeU with multi-zone multimedia management to stream media files to every connected device in different rooms.

capabilities. However, playback quality may vary due to factors including playback software, file formats, system usage, and available bandwidth.


Optimized collaboration with seamless file sharing and sync

The TS-451DeU centrally stores data and files, and supports SMB/CIFS, AFP and NFS protocols for file sharing across Windows®, Mac®, and Linux®/UNIX® networks. Coupled with the Qsync utility, any file uploaded to the TS-451DeU will be made available for all linked devices (such as computers, laptops and mobiles). You can sync shared folders and team folders for group file sharing to enhance the flexibility of team projects and collaboration. With the myQNAPcloud service, you can easily and securely connect to the TS-451DeU via the Internet for accessing, managing, and sharing NAS files. The Windows AD® and LDAP services enable system administrators to configure user permissions by using an existing Windows AD® server, LDAP server, or the TS-451DeU's built-in LDAP service.


High-speed VM Backup Solution

With Hyper Data Protector, the TS-451DeU becomes an agentless backup tool for unlimited VMware® vSphere and Microsoft® Hyper-V VM backup. Hyper Data Protector features incremental backup, global deduplication, backup scheduling and recovery compression that provides you with a cost-effective and reliable disaster recovery plan, ensuring 24/7 operation of your services.

Notes: QNAP NAS must be running QTS version 4.3.6 or later


All-in-one server to host virtual machines and containers

Regardless of your virtualization needs, you can count on Virtualization Station and Container Station for complete virtualization support. You can use Network & Virtual Switch to allocate adequate physical network resources to virtual machines, containers, and the NAS to simplify network deployment.

Run multiple Windows®, Linux®, UNIX®, and Android™ virtual machines and access them via a web browser or Virtual Network Computing (VNC). Businesses can run virtualized server applications on a single NAS without the need for additional physical servers.

Experience LXC and Docker® lightweight virtualization technologies, download apps from the built-in Docker Hub Registry®, import and export containers, and create abundant microservices.


Flexible and economical storage expansion

QNAP provides easy storage capacity expansion solutions. Here are several ways to expand your TS-451DeU storage as needed to accommodate data and business growth.

Upgrade RAID Capacity

Hot-swap lower-capacity drives with larger-capacity drives to expand your NAS capacity so it can grow with your business.

Attach Expansion Enclosures

Connect two 4-bay TR-004 RAID expansion enclosures, or one 8-bay TL-D800C/12-bay TL-R1200S-RP USB 3.2 Gen 2 JBOD, and use the QTS Storage & Snapshots Manager to easily handle NAS capacity expansion.

Migrate to a New NAS

Install your NAS hard drives into a larger QNAP NAS and retain all your existing data and configurations.


Extend hardware warranty up to 5 years

The TS-451DeU is backed by a 3-year warranty at no additional cost. You can purchase a warranty extension that extends your warranty coverage up to 5 years.




Intel® Celeron® J4025 dual-core 2.0 GHz processor (burst up to 2.9 GHz)

CPU Architecture 

64-bit x86

Maximum Memory 

8 GB (2 x 4GB)

Memory Slot 

For dual-DIMM configuration, you must use a pair of identical DDR4 modules.

Flash Memory 

4GB (Dual boot OS protection)

Drive Bay 

4 x 3.5-inch SATA 6Gb/s, 3Gb/s
The system is shipped without HDD.
For the HDD compatibility list, please visit

Drive Compatibility 

3.5-inch SATA hard disk drives
2.5-inch SATA hard disk drives
2.5-inch SATA solid state drives



M.2 SSD Slot 

2 x M.2 2280 SATA 6Gb/s slots

SSD Cache Acceleration Support 


2.5 Gigabit Ethernet Port (2.5G/1G/100M) 

2 (also support 10M)

Wake on LAN (WOL)


Graphic Processors 

Intel® HD Graphics 600

Floating Point Unit 


Encryption Engine 

Yes (AES-NI)
Hardware-accelerated Transcoding 

System Memory 

2 GB SO-DIMM DDR4 (1 x 2 GB)

Jumbo Frame 


USB 2.0 port 


USB 3.2 Gen 1 port 


Form Factor 

1U Rackmount

LED Indicators 

Power/Status, LAN, USB, HDD1-2, M.2 SSD 1-2


Power, Reset

Dimensions (HxWxD) 

44 × 430 × 295 mm

Weight (Net) 

4.15 kg

Weight (Gross) 

5.79 kg

Operating temperature 

0 - 40 °C (32°F - 104°F)

Storage Temperature 

-20 - 70°C (-4°F - 158°F)

Relative Humidity 

5-95% RH non-condensing, wet bulb: 27°C (80.6°F)

Power Supply Unit 

100W PSU, 100-240V

Power Consumption:

HDD Sleep Mode 13.18 W

Power Consumption:

Operating Mode, Typical 28.02 W
Tested with drives fully populated.


3 x 40mm

Sound Level 

21.6 db(A)

System Warning Buzzer

Kensington Security Slot



Supported Client Operating Systems 

Apple Mac OS 10.10 or later
Ubuntu 14.04, CentOS 7, RHEL 6.6, SUSE 12 or later Linux
IBM AIX 7, Solaris 10 or later UNIX
Microsoft Windows 7, 8, and 10
Microsoft Windows Server 2008 R2, 2012, 2012 R2 and 2016, 2019

Supported Browsers 

Apple Safari 7 or later
Google Chrome
Microsoft Internet Explorer 10 or later
Mozilla Firefox

Supported Languages 

Chinese (traditional and simplified), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Romanian, Russian, Spanish, Swedish, Thai, and Turkish

Supported File Systems 

Internal hard drive (EXT4)
External hard drive (EXT3, EXT4, NTFS, FAT32, HFS+, and exFAT)
Note: To use exFat you must purchase an exFAT driver license from License Center.

Network & Virtual Switch 

TCP/IP: Dual stack (IPv4 and IPv6)
Jumbo frame
Port trunking (Link aggregation)
Load balancing
DHCP server and client
USB & PCIe Wi-Fi adapter
Note: This feature does not support ad hoc networks because of security considerations.
Virtual switch
Network Address Translation (NAT)
Spanning Tree Protocol (STP)
Software-Defined Switch mode
Static Route
NCSI (Network Connectivity Status Indicator)
DDNS settings (Customize & Multiple Service)

Web Server 

HTTP/HTTPS Connections (TLS 1.0/1.1/1.2)
Supports WebDAV Connection
Supports Virtual Host (Max: 32)
Importable SSL Certificate


Network access protection with auto-blocking (SSH, Telnet, HTTP(S), FTP, CIFS/SMB, and AFP)
Host access control for shared folders (CIFS/SMB)
AES 256-bit folder-based and volume-based encryptions which are validated by FIPS 140-2 CAVP (Cryptographic Algorithm Validation Program)
256-bit external drive encryption (AES)
Importing of SSL certificates from Let's Encrypt
Instant alerts through email, SMS, push service, and audio
2-step verification

Storage Management 

Supported RAID types: RAID 0, 1, 5, 6, 10, 50, 60, JBOD, Single
RAID Hot Spare and Global Hot Spare
RAID Rebuild Speed Customization
Online RAID capacity expansion
Online RAID level migration
SSD RAID Over-provisioning
Note: RAID 0 and JBOD Data RAID does not support Over-provisioning.
SSD RAID Performance evaluation (with SSD Profiling Tool)
SSD TRIM for RAID 0,1,10
Bitmap support
Disk auto S.M.A.R.T. data migration
Disk bad block scan and S.M.A.R.T test.
Disk bad block recovery
Disk secure data erase
Ironwolf Health Management
Storage pools
Qtier™ Data Tiering Technology
Automatic or scheduled data tiering
IO-aware auto tiering
Shared folder tiering on demand
Flexible volumes and LUNs with thin provisioning and space reclaiming
If the NAS has less than 4GB RAM, then the maximum volume capacity is 144TB.
If the NAS has at least 4GB RAM, then the maximum volume capacity is 250TB.
Online volume expansion
Volume type conversion
Volume shrink
Storage space utilization
The maximum number of snapshots varies depending on installed memory.
Volume and LUN snapshots
Snapshot Dashboard
Snapshot Manager
Snapshot local restore and revert
Snapshot Clone
Snapshot Replica and Snapshot Vault
Snapshot remote restore and revert
Unified Snapshot Directory
Support for Windows Previous Versions (CIFS/SMB)
Snapshot Agent for Microsoft Windows and VMware vSphere
Storage expansion using QNAP expansion units
JBOD enclosure roaming
SSD read-only and read-write cache
SSD write-only cache
Note: SSD Cache supports Single, RAID 0, RAID 1, RAID 5, RAID 6, RAID 10 configuration. The maximum cache size is 1TB.


iSCSI targets with multiple LUNs per target
Note: The maximum number of targets + LUN is 256.
LUN mapping (LUN can be moved between iSCSI and FC)
LUN masking
Online LUN capacity expansion
SPC-3 persistent reservation
iSCSI LUN backup, one-time snapshot, and restoration
Virtual disks using iSCSI initiator
Note: The maximum number of virtual disks is eight.
Stack chaining master

VJBOD Cloud 

VJBOD Cloud is a block-based storage gateway solution that allows you to backup the storage space (LUN/Volume) on your local NAS using cloud space from cloud services providers such as Amazon, Azure, and Google Cloud.
VJBOD Cloud now supports one-to-one pairing between cloud volumes/LUNs and local stored spaces.
VJBOD Cloud now supports Amazon S3 Azure, BackBlaze, HuaWei Cloud, Alibaba Cloud, HKT, Google Cloud, OpenStack, RackSpace, Wasabi cloud, IBM cloud object storage service.
VJBOD Cloud now supports local stored mode, which means that data can be stored on the NAS and the data can be backed up to the cloud.
VJBOD Cloud now supports 20 recovery points for recovering volumes/LUNs.

Notification Center 

Added support for sending notifications via SMS center (SMSC) or providers, including Nexmo, Twilio, and Clickatell.
Added Outlook as an SMTP service option.
Added support for sending notifications via instant messaging applications, including Skype and Facebook Messenger.
Added support for Overview and History in Notification Center.
Added support for creating custom notification rules to specify notification criteria, including application categories, severity levels, and keywords.
Delivery method and message recipient settings are now more flexible.
Added support for creating multiple notification rules at the same time.
Added support for sending notifications for a single system event.

Power Management 

Wake-on-LAN (WoL)
Standby mode for internal drives
Scheduled power on and off
USB and network UPS support with SNMP management

Access Rights Management 

Multiple user creation
User data importing and exporting
User quota management
Local user access control (AFP, CIFS/SMB, FTP, and WebDAV)
Application access control (File Station, Music Station, Photo Station, and Video Station)
Subfolder permissions (AFP, CIFS/SMB, FTP, and File Station)

Domain Authentication 

Microsoft Active Directory (AD) and domain controller support
LDAP server and client
Domain user login (AFP, CIFS/SMB, FTP, and File Station)


Free host name registration (DDNS)
Optional myQNAPcloud SSL certificates (DDNS)
Auto router configuration using UPnP
Web-based file manager with HTTPS 2048-bit encryption
myQNAPcloud Link for remote access without complex router setup


File syncing across multiple devices with SSL secure connection
Selective synchronization for specific folders or subfolders
Team folders as file center for better collaboration
File sharing using email links
Policy settings for conflicting files and file type filter
Version control for a maximum of 64 versions
Unified privilege and configuration management
Central configuration mode
Remote erase and restore
Qsync client supported platforms: Windows, Mac, Ubuntu, Android and iOS

Resource Monitor 

Monitoring of NAS system resources such as CPU, memory and network
Monitoring of NAS storage resources such as volumes, RAID, and disk activity
Monitoring of NAS application resource use
Creation of extra swap space when SSDs are installed


Reporting of issues to the QNAP support team, with automatic collection of system information
Remote connection between QNAP support engineers and NAS for issue resolution (with user permission)

Web Desktop Administration 

Multi-window, multitasking system management
Smart toolbar and dashboard for system status display
SNMP versions 2 and 3
Resource monitor
Network recycle bin
Recover files deleted using AFP, CIFS/SMB, and File Station
Automatic cleanup
File type filter
Comprehensive logs (events and connections)
Syslog server and client
Backup and restoration of system settings
Qmanager: Mobile application for remote system monitoring and management

File Server 

File sharing across Windows, Mac, and Linux/UNIX
Microsoft networking (CIFS/SMB)
Apple networking (AFP)
NFS version 3/4 services
Windows ACL (CIFS/SMB)
Advanced folder permissions (AFP, CIFS/SMB, and FTP)
Shared folder aggregation (CIFS/SMB)

FTP Server 

FTP, SFTP and TFTP protocols
FTP over SSL/TLS (explicit FTPS)
FXP support

File Station 

Integrate with HybridMount which supports File Cloud Gateway and File Station Mount mode. File Station Mount mode supports:
Cloud drive mounting for Google Drive, Dropbox, Microsoft OneDrive, Microsoft OneDrive for Business, HiDrive, Amazon Cloud Drive, Yandex Disk and Box
Remote shared folder mounting (CIFS/SMB, FTP, and WebDAV)
Restore QDFF files and folders with HBS 3
Document viewing using Office Online, Google Docs, and Chrome extension
Microsoft Office file editing using Google Docs, Sheets, and Slides
ISO file mounting (maximum: 256 ISO files)
Mount smart phones as external storage
Read access for compatible optical disc drives
Read access for compatible smartphones (MTP)
Download and upload link sharing
File dragging and dropping (Chrome and Firefox)
File compression (ZIP and 7z)
Download link creation and sending for publicly shared files, with expiration date and password protection
Subtitle display (SRT and UTF-8)
Slideshow playback in media viewer
Convert image files to pdf by "Image2PDF" integration
Qfile: Mobile app for file browsing and management


Auto filing
Recipe function
Archiving through iSCSI, USB, DVD and remote NAS
Advanced settings
Source File Filters
File Editing
File deletion
Data integrity check
File conflict policy

HBS (Hybrid Backup Sync) 

Cloud storage backup to Amazon Glacier, Amazon S3, Azure Storage, Google Cloud Storage, HKT Object Storage, OpenStack Swift, WebDAV
Cloud storage syncing with Alibaba Cloud, Amazon Drive, Amazon S3, BackBlaze B2, Box, Dropbox, OneDrive, Google Drive, HiDrive, hubiC, OneDrive, OneDrive For Business, ShareFile, Yandex Disk
RTRR server & client with bandwidth control
Rsync server with download bandwidth control
Remote server syncing (CIFS/SMB, FTP, Rsync, and RTRR)
Scheduled backup to local and remote storage spaces
Backup versioning
Encryption, compression, and file filters
Centralized management for backup, restoration, and sync jobs
Support for Apple Time Machine
Data backup to multiple external storage devices
Desktop backup with QNAP NetBak Replicator for Windows
Support for the following third-party backup software: Veeam Backup & Replication, Acronis True Image, Arcserve Backup, Retrospect, Nakivo Backup & Replication, and Veritas Backup Exec

Multimedia Console 

Integrating indexing, thumbnail generation, and content management.
New content management design, configuring content sources for QTS multimedia applications.
View the status of multimedia apps and services all on the same screen.


Browse photos in timeline view or folder view.
Virtual albums and smart albums.
AI-assisted photo management, classifying people, things, places, etc.

Photo Station 

Photo organization by thumbnail, list, timeline, or folder
Virtual and smart albums
Validity control for album sharing
Photo tagging with text, colors, and ratings
Slideshows with background music and transition effects
Album configuration backup and restoration
Advanced folder permissions
Support for domain users
Qphoto: Mobile application for online browsing and sharing

Music Station 

Music playing and sharing through web browsers
Music streaming to multiple devices
Changing of album covers through Google search or by uploading photos
Internet radio (MP3)
Eight music alarms
Switching between spotlight mode and manage mode
Advanced search
Scrolling lyrics
Qmusic: Mobile application for music streaming and management

Video Station 

Video organization by thumbnail, list, timeline, or folder
Virtual and smart collections
Video tagging with text, colors, and ratings
Video link sharing through social media and email
Movie information and poster display from Internet sources or user-uploaded files
Subtitle display (SRT, ASS, SSA)
Subtitle search and downloading
Subtitle file importing
Subtitle display style adjustment
Playback speed adjustment
Direct video streaming for certain file formats
Facebook login
Advanced folder permissions
Support for LDAP users
Video uploading to YouTube and Youku
Multi-zone video display
Qvideo: Mobile application for online video browsing and management

Container Station 

Support for LXC and Docker
Application downloading from the built-in Docker Hub Registry
One-click installation
Container importing and exporting
Console mode
Three networking modes (Note: Docker containers support Bridge, NAT, and Host mode. Linux containers (LXC) support only NAT.)
Auto-start containers
Docker certificate downloading
Private registry addition
Application repository for switching to any repository on


Full-text search
Data distribution using a bar chart
Previews for photos, music, videos, PDFs, Gmail, and others
Advanced search operators and search scope
Customized search filters with included or excluded conditions
Related files suggestion in Viewer
Chrome, Firefox and Safari extension

QVR Pro 

Free 8 built-in camera channels for all models
Note: The maximum number of channels supported varies by NAS model, network configuration, and camera settings. For more information, visit" target="_blank">
Support for using QVR Pro as the motion detector
Camera management across different networks
Pre-allocation of dedicated recording spaces
User-defined trigger events and corresponding actions
Data sources paired with cameras for quick search
Network interfaces assigned to each camera for recording sessions
Support for RTSP and WebRTC
Support for exporting and importing camera connection information as CSV files
Integration with QVR Pro Client for viewing live and recorded surveillance videos
Daily auto backup for QVR Pro configuration files
Support for importing recordings
Support for recording H.264 camera video streams

QVR Pro Client (Desktop) 

Instant switch between Live and Playback modes
Dynamic and adjustable layouts for camera and E-map views
Qdewarp technique for dewarping fisheye and 360-degree cameras
Region of interest for each channel
Support for adding and editing cameras on QVR Pro Client
Hardware acceleration for fisheye cameras
Video wall (up to 8 monitors)
Hardware acceleration on Windows, Mac, Ubuntu, and HybridDesk Station (Optional graphics card)
Multithreaded decoding
Synchronized video playback
Support for specifying exported recordings on the timeline
Virtual keyboard (for HybridDesk Station version) (Optional graphics card)
Support for playing back recordings on deleted channels
Notification messages for changes in system time zone on QVR Pro
Server dashboard (when connected to QVR Center)
Playback control via the keyboard (space and arrow keys)
Support for displaying camera locations and event notifications on e-maps
Support for selecting the format of export files
Support for 2-step verification
Cross-platform support: Windows, macOS, Ubuntu, QNAP HybridDesk Station

QVR Pro Client (Mobile) 

Instant switch between Live and Playback modes
Cross-platform support: Android and iOS
Various advanced monitoring options, including sequential mode, PTZ control, auto cruising, and preset point control
Support for receiving Instant push notifications
Support for displaying camera locations on e-maps
Server dashboard that displays NAS information, camera status, and recording space status.

QVR Center 

Support for managing up to 128 QVR Pro servers (QVR Pro Gold license required)
Statistical graphics for visualizing event data
Log management for all added servers
Integration with QVR Pro Client for central monitoring across multiple servers
Centralized views using cameras from multiple servers
Backward compatibility with Surveillance Station and VioStor NVR

QVR Guard 

Failover solution designed for QVR Pro to ensure server availability
Viewing task details during the failover period
Automatic switch between Standby and Takeover modes based on the QVR Pro server status


Support for configuring USB webcams as ONVIF IP cameras (remotely manageable)
Support for monitoring live views (no other apps required)
Support for RTSP

Surveillance Station 

Support for up to 5,000 IP cameras
2 free camera licenses
Note: Surveillance Station supports a maximum of 16 camera channels. To add more camera channels, you need to purchase licenses from the QNAP License Store.
Instant playback for recent surveillance events
Visual options for e-maps
Playback speed control
Supporting for displaying preview snapshots on the timeline
Intelligent video analytics (IVA) for advanced video searching
Surveillance client designed for macOS
Mobile surveillance application (Vmobile) for iOS and Android
Mobile recording application (Vcam) for iOS and Android

QVPN Service 

VPN server
Secure remote access with PPTP, L2TP/IPSec, OpenVPN, Qbelt (QNAP proprietary) protocol.
Support for a maximum of 100 clients.
Support public/ NAS default/ manually DNS server.
Support manually assign/auto detect/none outgoing network interface.
Support privilege settings for domain/Local users.

VPN client

Support PPTP, L2TP/IPSec, OpenVPN, QBelt (QNAP proprietary) protocol.
Support using VPN as a NAS default gateway.
Support connection log check.
Support utility and Mobile apps for Windows, Mac, iOS, Android.

DLNA Server 

Support for DLNA/UPnP TVs and players such as PlayStation 4 and Xbox One
Support for CUE indexing file for APE and FLAC

Q'center (NAS CMS) 

Monitoring of multiple NAS devices
Utilization history reports
Unified configuration management
Monitoring of NAS devices behind NAT routers with Connect to Q'center
Note: The application is available in the App Center and in virtual appliance marketplaces (VMware vSphere ESXi and Microsoft Hyper-V).

Qfinder Pro 

QNAP NAS location on the same local network
NAS shared folder mounting
Basic setting configuration (firmware, SMTP server, and network settings)
Storage Plug & Connect (Windows only)
Creation and mapping of NAS shared folders
Creation of and connection to iSCSI targets and LUNs
Media upload (Windows only)
Media file upload to the NAS
Automatic creation of thumbnails or transcoding of videos using the computer

App Center 

Official and community software add-ons
Automatic updates and notifications for new versions
Repository for imported third-party content
User-specified volume for storing applications


Video, photo and music streaming to Chromecast using the following:
NAS applications: File Station, Music Station, Photo Station, and Video Station
Mobile applications: Qfile, Qmusic, Qphoto, and Qvideo
Note: You must install the Media Streaming add-on from App Center.

Download Station 

PC-less downloads (BitTorrent, FlashGet, FTP/FTPS, HTTP/HTTPS, QQDL, and Thunder)
The application supports a maximum of 500 tasks.
The maximum number of concurrent downloads is 30 (10 BT/PT, 10 HTTP, 10 FTP)
BitTorrent: Support for search, magnet links, private trackers, and proxy
Scheduled download and bandwidth control
RSS subscription and download (broadcatching)
Support for add-ons that extend download functionality
Qget: Mobile application for download browsing and management

Notes Station 3 

Insert Evernote Notes in Notes Station 3
Enable Embedding YouTube video into Notes
Table creation using the insert table editor


One-way scheduled sync of contacts from multiple Google accounts
Contact importing from CSV or vCard 3.0 files
Contact exporting to CSV or vCard 3.0 files
Duplicate contact searching and merging

IFTTT Agent 

Daily task automation
Social media data archiving
File synchronization between the NAS and various cloud services
System event notifications on Line, Skype, Gmail, and mobile phones
Music playback on Music Station using Amazon Echo voice commands
Usage of motion detection sensors as trigger for camera recording on Surveillance Station

Qmiix Agent: 

Trigger based file synchronization between the NAS and various cloud storage services
View miixes made using the Qmiix web portal that include triggers and actions involving QNAP apps.
Create miixes for web-based and NAS-related apps.
Create miixes on the Qmiix web portal that include File Station, a QNAP app
System event notifications to Line, Skype, Gmail, and mobile phones

Security Counselor 

Multiple Security Policies (Basic/Intermediate/Advanced/Custom).
Checks NAS settings for security weaknesses.
Integrates with existing anti-virus services.
Integrates with existing anti-malware services.
Integrates with the Security Advisory service.

Malware Remover 

Detects and removes malware from your QNAP NAS.
Note: To ensure the security of your NAS, update this app when new versions become available.

QIoT Suite 

Launch your IoT application with the shortest time and least human force
Supports multiple protocols (MQTT, HTTP and CoAP) and dashboards, and allows for the quick connection of development boards along with multiple sensors
The graphical rules engine provides drag-and-drop blocks with connection nodes, making it flexible to form a workflow
The customizable dashboard offers great advantages to help monitor important information of connected IoT devices.
Added support for the OPC UA protocol, QIoT OPC UA Client: connects to OPC UA servers and QIoT OPC UA Server: communicates with OPC UA clients and transfers data
Note: The application requires at least 4 GB of memory and installation of Container Station.


Centralized Remote Management solution designed for IT Teams in every industry relying on networked computing devices.
Remote Management of Windows, Linux and IPMI compatible devices
Offers you threshold-based alerts to fix performance problems before they impact your users, applications and the business.
Supports many active monitors like CPU Utilization, Memory Utilization, Disk Utilization, CPU Temperature, CPU Fan speed, and many more, giving complete visibility for administrators across all the mission critical computing devices.
Enable you to benefit from higher productivity, better collaboration and faster recovery from device downtime or system performance
Support Android mobile app
Note: The application requires installation of Container Station.

General Notes 

Designs and specifications are subject to change without notice.
Some features may vary by model.
QTS does not support DRM content and some IPv6 services.
Some data encryption features may be unavailable because of country-specific legislative restrictions.


Package Contents

TS-451DeU x1
Ethernet cable x 2
Power Cord x 1
Flat head screw x 16 (for 3.5" HDD)
Flat head screw x 12 (for 2.5" HDD)
M.2 SSD Heatsink x 2
Hanger x 2
Holder x 2
Quick Installation Guide (QIG)

Manufacturer Part No:
Product Type:
Product Family:
Shipping Weight:
5.82 kg
PB Part No:
Product Model:
1U Rackmount
Warranty: 36 months *
* Warranty period is as stated above unless the manufacturer has chosen to specify a longer period.
All warranties are return to base unless otherwise specified.


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Working well

Took me a couple of hours to set up, including configuring backups to Amazon S3 Glacier.
Quite easy to do.

By: RogerW54 25/02/21
Verified Owner
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Delivery & Pick-up

Shipping Costs

Shipping costs vary based on your location and the items being shipped and in some cases shipping may even be FREE.

To calculate what the shipping costs will be for your order, add the items you are interested in to your cart, view the Shopping Cart page, and select your 'Delivery Area' to calculate the shipping cost.

Shipping Security & Insurance

All orders shipped by PB Tech are sent via a courier with a signature required for each delivery. In some cases, and only where you have given the courier company permission to leave orders at a designated location, your order may be delivered without requiring a signature. All orders sent by PB Tech are fully insured in the unlikely event that your item(s) are damaged or go missing in transit.

Delivery Estimates

The delivery time-frame (in days) for each product we sell is detailed on the individual product page just to the right of the main product image. From when you place your order, in-stock products typically arrive within 7-10 working days for all countries that we ship to.

Overseas Shipments

If you are located in New Zealand, you can order directly from our New Zealand site If you are located in Australia you can order directly from our Australian website

Returns & Warranty

7 day right of exchange

If you change your mind after making a purchase, or realise you have ordered the incorrect item, you can enjoy the peace of mind that we offer a 7 day exchange policy.

To exchange a product, goods must be sealed / unopened, with packaging in original condition, and accompanied by a valid receipt dated no more than 7 calendar days from when you request an exchange.

If there is not a suitable product that can be exchanged for your returned item you will be offered a credit on your account or gift card based on the value paid at the time of purchase.

Please note, items purchased on finance cannot be exchanged for a gift card.

Hassle free warranty service

If your product develops a fault within the manufacturer warranty period, you need to fill out our request a return form.

If your product develops a fault outside of the manufacturer warranty or PB Tech warranty period, we offer a full repair service and are an authorised repair agent for leading brands such as Samsung, HP, Toshiba, Lenovo and more.

Returning a product / making a warranty claim

To return a product to PB Tech, please complete our request a return form.

Or view our returns policy for more information.


Shipping Costs

Shipping costs vary based on your location and the items being shipped and in some cases shipping may even be FREE.

To calculate what the shipping costs will be for your order, add the items you are interested in to your cart, view the Shopping Cart page, and select your 'Delivery Area' to calculate the shipping cost.

Shipping Security & Insurance

All orders shipped by PB Tech are sent via a courier with a signature required for each delivery. In some cases, and only where you have given the courier company permission to leave orders at a designated location, your order may be delivered without requiring a signature. All orders sent by PB Tech are fully insured in the unlikely event that your item(s) are damaged or go missing in transit.

Delivery Estimates

The delivery time-frame (in days) for each product we sell is detailed on the individual product page just to the right of the main product image. From when you place your order, in-stock products typically arrive within 7-10 working days for all countries that we ship to.

Overseas Shipments

If you are located in New Zealand, you can order directly from our New Zealand site If you are located in Australia you can order directly from our Australian website