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The MasterBox MB400L applies optimal cooling and expandability to a minimalistic, subtle design. With Versatile Cooling Options the MasterBox MB400L is designed to signify airflow performance in its purest form.
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.
WITH/WITHOUT ODD SUPPORT Depending on preference, an ODD version of the chassis is available. If an ODD is not preferred, a cleaner appearance and more cooling options on the top and front panels are supported.
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.
Adaptable Drive Cage VERSATILE COOLING OPTIONS Support for up to six fans and front, top, and rear radiator support ensure that performance is not compromised.
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.
MasterBox Series Size
Mini Tower Available Color(s)
Steel, Tempered Glass, Plastic Dimensions (L x W x H)
411 x 218 x 410mm (TG 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
0 3.5' Drive Bays
2 2.5' Drive Bays
2 I/O Panel
2x USB 3.2 Gen 1 (formerly USB 3.0), 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 120/140mm Fan Support - Front
3x 120mm, 2x 140mm Fan Support - Rear
1x 120mm Radiator Support - Top
120mm, 240mm Radiator Support - Front
120mm, 140mm, 240mm, 280mm Radiator Support - Rear
120mm Clearance - CPU Cooler
TG: 166mm 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 Warranty
2 years EAN Code
4719512097656 UPC Code
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