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.
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 |
Manufacturer | Cooler Master |
Category | PC case |
Manufacturer no. | MCB-B400L-KN5N-S00 |
Release date | 15.4.2021 |
Sales rank in Category PC case | 423 of 2770 |
Colour | Black |
Exact colour description | Black |
Material group | Metal, Plastic |
Material | Iron, Plastic |
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 | 325 mm |
PC case features | Side windows |
Front connectors | USB 2.0 |
Number of fan slots | 6 x |
Cooling properties | Water cooling possible |
Fans included | 1x 120mm |
Fan mount locations | 2x 120mm |
Fans included | 1x 120mm |
Fan mount locations | 1x 120mm |
Fans included | 1x 120mm |
Fan mount locations | 2x 120mm |
Radiator mount locations | 1x max. 120mm |
Fans included | 1x 120mm |
Fan mount locations | 1x 120mm |
Radiator mount locations | 1x max. 120mm |
Country of origin | China |
CO₂-Emission | |
Climate contribution |
Scope of delivery | PC |
Height | 41 cm |
Length | 41.10 cm |
Width | 21 cm |
Weight | 5.20 kg |
Length | 48 cm |
Width | 48.50 cm |
Height | 28.50 cm |
Weight | 5.83 kg |
Product Safety |
How often does a product of this brand in the «PC case» category have a defect within the first 24 months?
Source: GalaxusHow 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: GalaxusHow often is a product of this brand in the «PC case» category returned?
Source: Galaxus