Cooler Master MasterBox MB400L

mATX, Mini-ITX
Price in EUR including VAT
Ratings
Delivered between Mon, 7.7. and Wed, 9.7.
Supplied by
free shipping

Product details

Every element of the MasterBox MB400L has been designed with an elegant palette. With a brushed finish, subtle color tone, and the minimalist Cooler Master hexagon, this micro-ATX PC case enhances both gaming setups and workspaces while accommodating the latest hardware. The high style complements the high upgradability with front, top, and rear ventilation, providing additional mounting options for future cooling component upgrades. When an optional RGB or ARGB fan is installed behind the front panel, the Cooler Master hexagon on the front panel lights up. In total, up to 6 fans can be mounted simultaneously to ensure that even the most demanding cases stay cool under heavy load.

Key specifications

PC case design
Mini Tower
Number of 3.5" drive slots (internal)
2 x
"Number of 5.25"" drive slots"
1 x
Max. length graphics card
344 mm
Front connectors
USB 2.0
PC case features
Side windows
Max. height CPU cooler
167 mm
Item number
15666151

General information

Manufacturer
Cooler Master
Category
PC case
Manufacturer no.
MCB-B400L-KN5N-S00
Release date
15.4.2021
External links
Manufacturer's site (de)

Colour

Colour
Black
Exact colour description
Black

Material

Material group
Metal, Plastic
Material
Iron, Net, Plastic

PC case properties

PC case design
Mini Tower
Form factor
Micro ATX (mATX), Mini-ITX
"Number of 5.25"" drive slots"
1 x
Number of 3.5" drive slots (external)
2 x
Number of 3.5" drive slots (internal)
2 x
"Number of 2.5""/3.5"" combination slots"
2 x
"Number of 2.5"" drive slots"
2 x
Number of expansion card slots
4 x
Max. length graphics card
344 mm
Max. height CPU cooler
167 mm
Max length of power supply
140 mm
PC case features
Side windows

Connections

Front connectors
USB 2.0

Cooling properties

Number of fan slots
6 x
Cooling properties
Water cooling possible

Front side

Fans included
1x 120mm
Fan mount locations
2x 120mm

Rear side

Fan mount locations
1x 120mm

Top side

Fans included
1x 120mm
Fan mount locations
2x 120mm

HDD Cage

Fan mount locations
1x 120mm

Voluntary climate contribution

CO₂-Emission
Climate contribution

Scope of delivery

Scope of delivery
PC

Product dimensions

Height
41 cm
Length
41.10 cm
Width
21 cm
Weight
5.20 kg

Package dimensions

Length
48 cm
Width
48.50 cm
Height
28.50 cm
Weight
5.83 kg

Legal Notice

Product Safety

14-day cancellation right
30-day right of return
24 Months statutory warranty
1 additional offer

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Reviews & Ratings

Statutory warranty score

How often does a product of this brand in the «PC case» category have a defect within the first 24 months?

Source: Galaxus
  • 13.Montech
    0,5 %
  • 13.Phanteks
    0,5 %
  • 18.Cooler Master
    0,6 %
  • 18.Jonsbo
    0,6 %
  • 18.Raijintek
    0,6 %

Statutory warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Galaxus
  • 7.be quiet!
    2 days
  • 7.Fractal
    2 days
  • 9.Cooler Master
    3 days
  • 9.NZXT
    3 days
  • 9.Phanteks
    3 days

Return rate

How often is a product of this brand in the «PC case» category returned?

Source: Galaxus
  • 20.Fortron
    4,6 %
  • 21.Endorfy
    4,8 %
  • 22.Cooler Master
    5 %
  • 22.Darkflash Tech
    5 %
  • 22.Xilence
    5 %
Source: Galaxus