Ubiquiti UNAS-4-B 2.5Gbps Desktop NAS with (4) 2.5/3.5" Drive Bays - Black

PoE+++ Powered / 5 Gbps USB-C

PB Tech price

AUD $ 606 .38

$ 606 .38

Out of stock

Ubiquiti UNAS-4-B 2.5Gbps Desktop NAS with (4) 2.5/3.5" Drive Bays - Black

PoE+++ Powered / 5 Gbps USB-C

Brand: Ubiquiti
MPN: UNAS-4-B
Part #: NASUBI20411
UPC:

PB Tech price

AUD $ 606 .38

Out of stock

Delivery: Out of stock

Estimated Delivery Times

7 - 10 working days for international destinations

View all shipping info

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Brand: Ubiquiti
MPN: UNAS-4-B
Part #: NASUBI20411
UPC:

Be the first to review this product

HDD Included

None

Number of Bays

6 Bays

Form Factor

Desktop

Number of Cores

Processor Speed

Not Specified

Memory Size

4GB

1Gb RJ45 Ports

None

10Gb RJ45 Ports

None

View full specs

Returns & Warranty Bulk Quote Print Page

Product is out of stock. View similar products in-stock at PB Tech

Ubiquiti UNAS-2-B 2.5Gbps Desktop NAS with (2) 3.5" Drive Bays - Black

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HDD Included:

None

Number of Bays:

2 Bays

Form Factor:

2.5"

Number of Cores:

Processor Speed:

Not Specified

Memory Size:

8GB

1Gb RJ45 Ports:

1 Port

10Gb RJ45 Ports:

1 Port

MPN:

UNAS-2-B

Part #:

NASUBI020211

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Ubiquiti UNAS-2-W 2.5Gbps Desktop NAS with (2) 3.5" Drive Bays - White

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HDD Included:

None

Number of Bays:

2 Bays

Form Factor:

2.5"

Number of Cores:

Processor Speed:

Not Specified

Memory Size:

4GB

1Gb RJ45 Ports:

1 Port

10Gb RJ45 Ports:

1 Port

MPN:

UNAS-2-W

Part #:

NASUBI020210

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Asustor Drivestor 4 Gen 2 AS1204T 4-Bay NAS

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A high capacity home multimedia hub

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HDD Included:

None

Number of Bays:

4 Bays

Form Factor:

Desktop

Number of Cores:

Processor Speed:

1700Mhz

Memory Size:

1GB

1Gb RJ45 Ports:

1 Port

10Gb RJ45 Ports:

None

MPN:

AS1204T

Part #:

NASASTAS1204T

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Features

UNAS 4

UniFi Network Attached Storage with (4) 2.5/3.5" HDD bays, (2) M.2 NVMe SSD cache slots, 2.5 GbE networking, USB-C connectivity, and an included PoE+++ adapter, all in a compact footprint.

Deployment

These HDDs have been qualified in Ubiquiti QA Labs.

Please note that third-party M.2 NVMe SSDs require the M.2 SSD Tray (UACC-SSD-Tray) for installation and cannot be installed directly into the device.

HDD

NVMe SSD

Specifications

General

Colour

Black

Dimensions

246 x 129 x 224.5 mm
(9.7 x 5.1 x 8.8")

Storage Capacity

(4) 3.5" drive bays
(2) M.2 NVMe bays

Networking Interface

(1) 2.5 GbE RJ45 (2.5G/1G/100M/10M)

Expansion Port

(1) 5 Gbps USB-C

Form Factor

Desktop

Hardware

Hard Drive Capacity

(4) 2.5" / 3.5" HDD support
(2) M.2 NVMe SSD support

USB Drive

Yes

Max. Power Budget for Drives

80W

Max. Power Consumption

90W

Power Method

PoE+++

Power Supply

90W PoE+++ adapter (Included)

Processor

Quad-Core ARM® Cortex®-A55 at 1.7 GHz

Memory

4 GB

Management

Ethernet

RF Interface

Bluetooth 4.1

Display

1.47" color LCM

Weight

2.6 kg (5.7 lb)

Enclosure Material

Polycarbonate

LEDs

System : Yes

Ambient Operating Temperature

-5 to 40° C (23 to 104° F)

Ambient Operating Humidity

10 to 90% noncondensing

NDAA Compliant

Yes

Certifications

FCC, CE, IC

Software

Application Requirements

UniFi Drive :
Version 3.4.5 and later
Mobile App:
iOS™ version 10.32.1 and later
Android™ version 10.35.1 and later

Supported File Protocols

NFS:
Yes
SMB:
Yes

Supported features on unifi.ui.com

RAID Type :
RAID 5
RAID 6
RAID 10
RAID Group : Single
Personal Drive & Shared Drive : Yes
SSD Cache : Yes
Max. NVMe SSD Capacity Supported : 2 TiB
File Encryption : Yes
Backup to Remote UNAS : Yes
Backup to CIFS/SMB Server : Yes
Backup to Cloud Services (Google Drive, OneDrive, Dropbox, Amazon S3, Backblaze B2, Wasabi) : Yes
Snapshots : Yes
Share Links : Yes
Time Machine Backup : Yes
Client App Support : Yes
User Groups : Yes

Manufacturer Part No:

UNAS-4-B

Brand:

Ubiquiti

Product Type:

NAS

UPC

Product Family:

Shipping Weight:

10.87 kg

PB Part No:

NASUBI20411

Product Model:

UNAS-4-B

Warranty: 12 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.

Reviews

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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 www.pbtech.co.nz. If you are located in Australia you can order directly from our Australian website www.pbtech.com/au

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.

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Ubiquiti UNAS-4-B 2.5Gbps Desktop NAS with (4) 2.5/3.5" Drive Bays - Black PoE+++ Powered / 5 Gbps USB-C

Brand: Ubiquiti
MPN: UNAS-4-B
Part #: NASUBI20411

AUD $606.38

Date Created: 22:32, 02-07-2026
Product URL: https://www.pbtech.com/product/NASUBI20411/Ubiquiti-UNAS-4-B-25Gbps-Desktop-NAS-with-4-2535-D

Features

UNAS 4

UniFi Network Attached Storage with (4) 2.5/3.5" HDD bays, (2) M.2 NVMe SSD cache slots, 2.5 GbE networking, USB-C connectivity, and an included PoE+++ adapter, all in a compact footprint.

Deployment

These HDDs have been qualified in Ubiquiti QA Labs.

Please note that third-party M.2 NVMe SSDs require the M.2 SSD Tray (UACC-SSD-Tray) for installation and cannot be installed directly into the device.

HDD

NVMe SSD

Specifications

General

Colour

Black

Dimensions

246 x 129 x 224.5 mm
(9.7 x 5.1 x 8.8")

Storage Capacity

(4) 3.5" drive bays
(2) M.2 NVMe bays

Networking Interface

(1) 2.5 GbE RJ45 (2.5G/1G/100M/10M)

Expansion Port

(1) 5 Gbps USB-C

Form Factor

Desktop

Hardware

Hard Drive Capacity

(4) 2.5" / 3.5" HDD support
(2) M.2 NVMe SSD support

USB Drive

Yes

Max. Power Budget for Drives

80W

Max. Power Consumption

90W

Power Method

PoE+++

Power Supply

90W PoE+++ adapter (Included)

Processor

Quad-Core ARM® Cortex®-A55 at 1.7 GHz

Memory

4 GB

Management

Ethernet

RF Interface

Bluetooth 4.1

Display

1.47" color LCM

Weight

2.6 kg (5.7 lb)

Enclosure Material

Polycarbonate

LEDs

System : Yes

Ambient Operating Temperature

-5 to 40° C (23 to 104° F)

Ambient Operating Humidity

10 to 90% noncondensing

NDAA Compliant

Yes

Certifications

FCC, CE, IC

Software

Application Requirements

UniFi Drive :
Version 3.4.5 and later
Mobile App:
iOS™ version 10.32.1 and later
Android™ version 10.35.1 and later

Supported File Protocols

NFS:
Yes
SMB:
Yes

Supported features on unifi.ui.com

Date Created: 22:32, 02-07-2026
Product URL: https://www.pbtech.com/product/NASUBI20411/Ubiquiti-UNAS-4-B-25Gbps-Desktop-NAS-with-4-2535-D

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Ubiquiti UNAS-4-B 2.5Gbps Desktop NAS with (4) 2.5/3.5" Drive Bays - Black

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Ubiquiti UNAS-4-B 2.5Gbps Desktop NAS with (4) 2.5/3.5" Drive Bays - Black

PoE+++ Powered / 5 Gbps USB-C

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Features

UNAS 4

Deployment

These HDDs have been qualified in Ubiquiti QA Labs.

Specifications

Reviews

Do you own this product?

Delivery & Pick-up

Shipping Costs

Shipping Security & Insurance

Delivery Estimates

Overseas Shipments

Returns & Warranty

7 day right of exchange

Hassle free warranty service

Returning a product / making a warranty claim

Popular NAS Devices

Share this Product

Ubiquiti UNAS-4-B 2.5Gbps Desktop NAS with (4) 2.5/3.5" Drive Bays - Black PoE+++ Powered / 5 Gbps USB-C

Features

UNAS 4

Deployment

These HDDs have been qualified in Ubiquiti QA Labs.

Specifications

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