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Cooler Master MasterBox MB400L mATX Mini Tower Case

mATX / ITX Support - CPU Cooler Supports up to 166mm - GPU Support up to 344mm - 4x PCI Slots - 280mm Radiator Support - Front: 2x USB Port - NO PSU

PB Tech price
PB Tech price
$ 56 .13
 +GST
$ 61 .74
 inc GST

In stock at Supplier

Cooler Master MasterBox MB400L mATX Mini Tower Case

mATX / ITX Support - CPU Cooler Supports up to 166mm - GPU Support up to 344mm - 4x PCI Slots - 280mm Radiator Support - Front: 2x USB Port - NO PSU

Classic design from Cooler Master
  • Brand: Cooler Master
  • MPN: MCB-B400L-KNNN-S00
  • Part #: CHACLM12401
  • UPC: 884102069987
32
PB Tech price
$ 56 .13 $ 61 .74
 +GST  inc GST


Delivery: Out of stock
Express Delivery Times
Metro - Within 2-3 working days
Rural - Within 3-5 working days

Standard Delivery Times
NSW, VIC, ACT, QLD - Within 3-7 working days
SA, WA, TAS, NT - Within 5-10 working days

View all shipping info
$56.13  +GST
$61.74
  • Brand: Cooler Master
  • MPN: MCB-B400L-KNNN-S00
  • Part #: CHACLM12401
  • UPC: 884102069987

Side Window

No

Form Factor

mATX

Radiator Support

280mm

Maximum Card Length

344mm

CPU Cooler Height Clearance

166mm

Colour

Black

Dedicated 2.5" Bay

2

2.5" / 3.5" Bays

2

What PB Tech customers are saying about this product...

See More Reviews
No

"Good looking case, should have more cord accessible"

G
By: Guest 02/05/26

"An amazing Pc Case . cones with cable ties for nice cable management . dedicated spot to put in the storage drives for SSD, HDD. over all i love this new upgrade that i treated my ...view more"

GC
By: Garrett_JC 17/09/24
Verified Owner
No

"I needed a case did the though it was black do recommend 👍"

G
By: Guest 17/01/24

Features

MASTERBOX MB400L WITHOUT ODD

SENSIBLE BY DESIGN

- Brushed Front Panel
- Hexagon Gleam
- Mesh Intakes
- Without ODD Support
- Adaptable Drive Cage
- Versatile Cooling Options
- Room For Upgrades

*This model does not have the ODD bay pictured below

 

BRUSHED FRONT PANEL

A brushed finish spans the entire front panel for an elegant and minimalistic design.

 

HEXAGON GLEAM

If an optional, illuminated fan is installed, the Cooler Master hexagon logo will capture light from the fan and emit a glow on the front panel.

 

MESH INTAKES

Large, mesh intakes span each side of the front panel to provide additional airflow to system.

*This model does not have the ODD bay pictured below

 

WITHOUT ODD SUPPORT

With no ODD, a cleaner appearance and more cooling options on the top and front panels are supported.

*This model does not have the ODD bay pictured below

 

ADAPTABLE DRIVE CAGE

The drive cage is (re)movable, able to shift toward the front to accommodate for PSU space, backwards to provide additional radiator space, or even completely removed.

 

VERSATILE COOLING OPTIONS

Support for up to six fans and front, top, and rear radiator support ensure that performance is not compromised.

*This model does not have the ODD bay pictured below

 

ROOM FOR UPGRADES

Support for up to a 344mm graphics card, a 166mm CPU cooler, and up to a 325mm PSU in length provides room for upgrades to stay ahead of the game.

Specifications

Model Number

MCB-B400L-KNNN-S00

Color

Black

Materials

Mesh, Plastic, Steel

Dimensions (L x W x H)

411 x 210 x 410mm (Steel Incl. Protrusions), 396 x 210 x 400mm (Excl. Protrusions)

Weight

5.47kg

Motherboard Support

Micro ATX, Mini ITX

Expansion Slots

4

5.25" Drive Bays

N/A

3.5" Drive Bays

2

2.5" Drive Bays

2

I/O Panel

1x USB 3.2 Gen 1 (formerly USB 3.0), 1 x USB 2.0, 1x 3.5mm Headset Jack (Audio+Mic)

Pre-installed Fans - Top

N/A

Pre-installed Fans - Front

N/A

Pre-installed Fans - Rear

1x 120mm (Black)

Fan Support - Top

2x 120mm, 2x 140mm

Fan Support - Front

3x 120mm, 2x 140mm, Mount behind the front plate

Fan Support - Rear

1x 120mm

Radiator Support - Top

120mm, 240mm

Radiator Support - Front

120mm, 140mm, 240mm, 280mm

Radiator Support - Rear

120mm

Clearance - CPU Cooler

Steel: 167mm

Clearance - PSU

140mm (HDD cage in backmost position), 325mm (w/o front radiator & HDD cage)

Clearance - GFX

344mm

Cable Routing

18-22mm

Dust Filters

Top, Front, Bottom

Power Supply Support

Bottom Mount, ATX

Series

MasterBox Series

Size

Mini Tower

Manufacturer Part No:
MCB-B400L-KNNN-S00
Brand:
Product Type:
Mini Tower Case
UPC
884102069987
Product Family:
MasterBox
Shipping Weight:
6.4 kg
PB Part No:
CHACLM12401
Product Model:
MB400L
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.
Provide feedback on product content: If this product page is missing key information or you spotted a mistake please let us know.

Reviews

4.7 out of 5 Stars Based on 32 reviews
5 Stars
22
4 Stars
9
3 Stars
1
2 Stars
0
1 Stars
0

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Pretty good case

Pretty easy case to build in, definitely recommended

EI
By: enochshi 28/09/21
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Great little case

Great case for the cost, supports big 140mm fans in the front and top, has a magnetic dust filter and looks great. Spacious interior, fits 3-slot full length GPUs with tons of room to breathe.

DC
By: DuncanC85 18/02/21
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

A good inexpensive mATX

This case is the perfect size to sit on my l-shaped desk (with a triple monitor setup).

The back panel pci slots need to be broken out and this can leave the in-between metal a bit bent so take care.

I have installed 3 x 120mm fans in the front of the case plus a 240mm radiator at the top. It's a bit of a squish but with good cable management it's looks and performs fine.

With a larger PSU you may need to ditch the drive cage. This is a pity however it is a mATX case and with a good choice of MB you won't need the cage anyway. A MB with 2 X M.2 should see you right.

Very happy with purchase.

GL
By: GeneL29 28/11/20
0 out of 0 users found this review helpful
Did you find it helpful?

Decent case

Decent looking case for the price, the back PCIe slots cannot be screwed back. When removing them, it can bend the case quite a bit.
Cable management is also not very easy in this case unless you don't use the drive cage.
Airflow is average, the stock fan that mine came with made a little buzzing noise so I had to replace it

TL
By: ThienL 20/08/20
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Top tier case

Top tier case for the price cant beat it.

G
By: Guest 18/08/20
0 out of 0 users found this review helpful
Did you find it helpful?

Great value

Great price , nice looking case , plenty of room for cable management
Nice glass window , removable hdd cage ,

No cons really

KW
By: KentW5 05/08/20
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Great Case!

Awesome mATX case with overall good airflow and space for cable management.

JW
By: JohnW6497 04/07/20
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Simple and cheap

Very easy case to build in. Included fan is quiet enough. Intake is mesh but not removable like on the top.

PH
By: PhillipH414 15/06/20
Verified Owner
0 out of 0 users found this review helpful
Did you find it helpful?

Accessories

Delivery & Pick-up

Learn more about delivery time-frames over Christmas and the New Year period.

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 and 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, for DHL express delivery in-stock products typically arrive within 2-3 working days for metro areas and 3-5 working days for rural areas. For Standard delivery in-stock products typically arrive within 3-7 working days for NSW, VIC, ACT, QLD and SA deliveries and 5-10 working days for WA, TAS and NT.

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 from another country you can order from www.pbtech.com

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.

Cooler Master MasterBox MB400L mATX Mini Tower Case mATX / ITX Support - CPU Cooler Supports up to 166mm - GPU Support up to 344mm - 4x PCI Slots - 280mm Radiator Support - Front: 2x USB Port - NO PSU

Classic design from Cooler Master
  • Brand: Cooler Master
  • MPN: MCB-B400L-KNNN-S00
  • Part #: CHACLM12401
  • UPC:884102069987
$56.13 Excluding GST $61.74 Including GST

Date Created: 01:21, 22-06-2026
Product URL: https://www.pbtech.com/au/product/CHACLM12401/category/gaming?pg=3

Features

MASTERBOX MB400L WITHOUT ODD

SENSIBLE BY DESIGN

- Brushed Front Panel
- Hexagon Gleam
- Mesh Intakes
- Without ODD Support
- Adaptable Drive Cage
- Versatile Cooling Options
- Room For Upgrades

*This model does not have the ODD bay pictured below

 

BRUSHED FRONT PANEL

A brushed finish spans the entire front panel for an elegant and minimalistic design.

 

HEXAGON GLEAM

If an optional, illuminated fan is installed, the Cooler Master hexagon logo will capture light from the fan and emit a glow on the front panel.

 

MESH INTAKES

Large, mesh intakes span each side of the front panel to provide additional airflow to system.

*This model does not have the ODD bay pictured below

 

WITHOUT ODD SUPPORT

With no ODD, a cleaner appearance and more cooling options on the top and front panels are supported.

*This model does not have the ODD bay pictured below

 

ADAPTABLE DRIVE CAGE

The drive cage is (re)movable, able to shift toward the front to accommodate for PSU space, backwards to provide additional radiator space, or even completely removed.

 

VERSATILE COOLING OPTIONS

Support for up to six fans and front, top, and rear radiator support ensure that performance is not compromised.

*This model does not have the ODD bay pictured below

 

ROOM FOR UPGRADES

Support for up to a 344mm graphics card, a 166mm CPU cooler, and up to a 325mm PSU in length provides room for upgrades to stay ahead of the game.

Specifications

Model Number

MCB-B400L-KNNN-S00

Color

Black

Materials

Mesh, Plastic, Steel

Dimensions (L x W x H)

411 x 210 x 410mm (Steel Incl. Protrusions), 396 x 210 x 400mm (Excl. Protrusions)

Weight

5.47kg

Motherboard Support

Micro ATX, Mini ITX

Expansion Slots

4

5.25" Drive Bays

N/A

3.5" Drive Bays

2

2.5" Drive Bays

2

I/O Panel

1x USB 3.2 Gen 1 (formerly USB 3.0), 1 x USB 2.0, 1x 3.5mm Headset Jack (Audio+Mic)

Pre-installed Fans - Top

N/A

Pre-installed Fans - Front

N/A

Pre-installed Fans - Rear

1x 120mm (Black)

Fan Support - Top

2x 120mm, 2x 140mm

Fan Support - Front

3x 120mm, 2x 140mm, Mount behind the front plate

Fan Support - Rear

1x 120mm

Radiator Support - Top

120mm, 240mm

Radiator Support - Front

120mm, 140mm, 240mm, 280mm

Radiator Support - Rear

120mm

Clearance - CPU Cooler

Steel: 167mm

Clearance - PSU

140mm (HDD cage in backmost position), 325mm (w/o front radiator & HDD cage)

Clearance - GFX

344mm

Cable Routing

18-22mm

Dust Filters

Top, Front, Bottom

Power Supply Support

Bottom Mount, ATX

Series

MasterBox Series

Size

Mini Tower

Date Created: 01:21, 22-06-2026
Product URL: https://www.pbtech.com/au/product/CHACLM12401/category/gaming?pg=3