Each element of the MasterBox MB400L was created from an elegant
palette. With a brushed finish, subtle hue, and the minimalistic
Cooler Master hexagon, this Micro-ATX PC case decorates the gaming
setup and workspace while also being able to house the latest
hardware.
High style embellishes high upgradeability with front, top, and
rear ventilation, offering additional mounting options for
upgrading cooling components in the future. If an optional RGB or
ARGB fan is installed behind the front panel, the Cooler Master
hexagon will also be illuminated on the front panel. A total of 6
fans can be mounted simultaneously, ensuring that even the most
demanding builds can stay cool under heavy use.
- Brushed Front Panel: A brushed finish spans
the entire front panel for an elegant and minimalistic design.
- Mesh Intakes: Large, mesh intakes span each
side of the front panel to provide additional airflow to
system.
- Adaptable Drive Cage: The drive cage is
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.
Product Name |
MasterBox MB400L w/o ODD |
MasterBox MB400L w/ ODD |
Exterior Color |
Black |
Materials |
Exterior |
Steel, Plastic |
Left Side Panel |
Tempered Glass / Steel |
Dimensions |
Incl. Protrusions |
411 x 218 x 410mm (TG) 411 x 210 x
410mm (Steel) |
Excl. Protrusions |
396 x 210 x 400mm |
Volume (Liters Excl.
Protrusions) |
33.26L |
Motherboard
Support |
Mini-ITX, Micro-ATX |
Drive Bays |
5.25" ODD |
N/A |
1 |
3.5" HDD |
2 |
3.5" / 2.5" Combo |
N/A |
2.5” SSD |
2 |
I/O Panel *may vary per
region |
USB Ports (option 1) |
2 x USB 3.2 Gen 1 (USB 3.0) |
USB Ports (option 2) |
1 x USB 3.2 Gen 1 (USB 3.0) 1 x USB
2.0 |
Included Accessories |
Audio In / Out |
1 x 3.5mm Headset Jack (Audio +
Mic) |
Pre-installed Fan(s)
*may vary per region |
Top |
N/A |
Front |
N/A |
Rear |
1 x 120mm* |
Fan Support |
Top |
2 x 120mm 2 x 140mm |
1 x 120mm 1 x 140mm |
Front *mount behind the front plate |
3 x 120mm 2 x 140mm |
2 x 120mm 2 x 140mm |
Rear |
1 x 120mm |
Radiator Support |
Top |
120 / 240mm |
120mm |
Front |
120 / 140 / 240 / 280mm |
120 / 140 / 240 / 280mm (remove &
reinstall ODD bracket to mount 280mm radiator) |
Rear |
120mm |
Clearances |
CPU Cooler |
Steel: 167mm, TG: 166mm |
Power Supply |
325mm max (w/o front radiator & HDD
cage) 140mm (HDD cage in backmost position) |
Graphics Card |
344mm |
Cable Routing |
Behind MB Tray |
18~22mm |
Dust Filters |
Front, Top, Bottom |
Power Supply
Support |
Bottom Mount, ATX |
Warranty |
2 Years |