Brushed Front Panel
A brushed finish spans the entire front panel for an elegant and minimalistic design.
Sensible by design
MasterBox MB400L without ODD
Brushed Front Panel
Hexagon Gleam
Mesh Intakes
With/Without ODD Support
Adaptable Drive Cage
Versatile Cooling Options
Room For Upgrades
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.
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.
- Materials Steel
- Radiator Support - Rear 120mm
- Power Supply Support Bottom Mount
- Dust Filters Top
- 5.25" Drive Bays N/A
- Clearance - PSU 140mm (HDD cage in backmost position)
- Pre-installed Fans - Top N/A
- Dust Filters Front
- Warranty 2 years
- 3.5" Drive Bays 2
- Materials Plastic
- Color(s) Black
- Series MasterBox Series
- Size Mini Tower
- 2.5" Drive Bays 2
- Dust Filters Bottom
- Pre-installed Fans - Rear 1x 120mm (Black)
- Power Supply Support ATX
- Fan Support - Rear 1x 120mm
- Radiator Support - Front 280mm
- Radiator Support - Front 240mm
- Radiator Support - Top 240mm
- Fan Support - Front 2x 140mm
- Radiator Support - Front 140mm
- Motherboard Support Micro ATX
- Radiator Support - Top 120mm
- Radiator Support - Front 120mm
- Materials Mesh
- Fan Support - Top 2x 140mm
- Fan Support - Front 3x 120mm
- Cable Routing 18-22mm
- Clearance - PSU 325mm (w/o front radiator & HDD cage)
- Expansion Slots 4
- Motherboard Support Mini ITX
- Fan Support - Top 2x 120mm
- Clearance - CPU Cooler Steel: 167mm
- Pre-installed Fans - Front N/A
- Weight 5.47kg
- Fan Support - Front Mount behind the front plate
- I/O Panel 1x 3.5mm Headset Jack (Audio+Mic)
- Clearance - GFX 344mm
- I/O Panel 2x USB 3.2 Gen 1 (USB 3.0)
- Dimensions (L x W x H) 411 x 210 x 410mm (Steel Incl. Protrusions)
- Dimensions (L x W x H) 396 x 210 x 400mm (Excl. Protrusions)
- Model Number MCB-B400L-KNNN-S00