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Cooler Master MasterBox MB400L

Cooler Master MasterBox MB400L
PC Case - mATX (Micro ATX) and mITX (Mini ITX), 2× 3,5" slot(s), 2× 2,5" slot(s), USB 2.0, USB 3.2 Gen 1 (USB 3.0) and Headphones / Microphone, 1x120mm, max. heat sink height: 167mm, max. graphics card length: 344mm, without power supply, side panel made of steel
Extended Warranty + 3 Years. Best Offer. £15.58
60-Day Return Option £4.55
Price incl. VAT £64.90
Price excl. VAT £54.08
In stock > 5 pcs
Hassle-free One-click buying using preset Shipping and Payment options.
Warranty 24 months Code:  CCmb400l Product Number:  MCB-B400L-KNNN-S00 Producer's Website:
Cooler Master MasterBox MB400L £64.90 In stock > 5 pcs

Cooler Master MasterBox MB400L

This PC case Cooler Master MasterBox MB400L has a size of Midi Tower and offers a stylish design, especially its nice black colour. This colour is on the steel construction. A Midi Tower format is perfect for powerful home PCs for spaces where a Big Tower would not fit. Though this is a smaller type of computer case, it will fit a good amount of professional and gaming parts. An advantage of this kind of chassis is the possibility of great removal of excess heat, thanks to the medium or large coolers and fans. They will fit into the case without an issue. The basic control panel of your computer, allowing the connection and control of peripherals, is located on the top of the chassis. You'll be able to put a mATX (Micro ATX) and mITX (Mini ITX) type motherboard into the Cooler Master MasterBox MB400L case. The front fan has a diameter of 140 mm, and the back fan has a diameter of 120 mm.

Cooler Master MasterBox MB400L PC Case Key Features

  • Midi Tower PC case created for the construction of powerful desktop computers
  • Will fit modern components alongside quality cooling
  • Cooler Master MasterBox MB400L has 6 fan slots
  • 120 are fitted with fans
  • Front fan has a size measuring 140 mm
  • Cooler Master MasterBox MB400L back fan size: 120 mm
  • Front panel location: top

Equipment Included with the Cooler Master MasterBox MB400L Computer Case

This case has 2 internal 3.5" HDD slots and 2 2.5" solid state disk slots. Any other components can be installed onto the motherboard. In order to avoid chaos in your rig, your new Cooler Master MasterBox MB400L has room for cable management. There are adaptors on the control panel that will allow you to connect usb 2,0, USB 3,2 Gen 1 (USB 3,0) and headphones / microphone. The power source of the computer case by Cooler Master is placed at the bottom of the chassis, so it's not endangered by hot temperatures. Dust filters will prevent a breach of any unwanted particles.


Midi Tower Done!
Black Done!
Motherboard form factor
mATX (Micro ATX), mITX (Mini ITX) Done!
Number of internal 3.5" slots
Number of internal 2.5" slots

Usage and size

Midi Tower Done!


Black Done!

Internal structure

Motherboard form factor
mATX (Micro ATX), mITX (Mini ITX) Done!
Number of internal 3.5" slots
Number of internal 2.5" slots
Max. processor heat sink height
167 mm Done!
Max. graphics card length
344 mm Done!
Additional equipment
Cable management, Dust filters Done!

External structure

Front panel location
top Done!
Front panel connectors
USB 2.0, USB 3.2 Gen 1 (USB 3.0), Headphones / Microphone Done!
Opaque Done!
Side panel material
steel Done!


Power supply
Without power supply Done!
Supported PSU format
ATX Done!

Cooling system

Front fan size
2x140mm , 3x120mm Done!
Rear fan size
1x120mm Done!
Top fan size
2x120mm , 2x140mm Done!
Number of fan positions
Number of mounted ventilators
1x120mm Done!
Supported radiator size on top
120mm , 240mm Done!
Supported radiator size from the front
120mm , 140mm, 240mm, 280mm Done!


Backlight colour
No backlighting Done!


Wardrobe material
Steel Done!


210 mm (21 cm) Done!
410 mm (41 cm) Done!
411 mm (41.1 cm) Done!
5.2 kg Done!
More Specifications

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Specifications can be changed without notice. Images are for illustrative purposes only. Retail Price (MSRP) means the manufacturer's/supplier's suggested retail price.

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Chcete doručit zboží do Česka? Prohlédněte si Cooler Master MasterBox MB400L. Chcete doručiť tovar na Slovensko? Prezrite si Cooler Master MasterBox MB400L. For shipping to other EU countries visit this page Cooler Master MasterBox MB400L. Für Versand nach Deutschland, besuchen Sie bitte Cooler Master MasterBox MB400L. Für Versand nach Österreich, besuchen Sie bitte Cooler Master MasterBox MB400L. Souhaitez-vous livrer des produits à la France ? Examinez Cooler Master MasterBox MB400L.

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