SENSIBLE BY DESIGN
411 x 218 x 410mm (TG)
411 x 210 x 410mm (Steel)
Volume (Liters Excl. Protrusions)
I/O Panel
*options may vary
per region
2 x USB 3.2 Gen 1 (USB 3.0)
1 x USB 3.2 Gen 1 (USB 3.0)
1 x USB 2.0
1 x 3.5mm Headset Jack (Audio + Mic)
Pre-installed
Fan(s)
*options may vary
per region
Front
(mount behind the
front plate)
120 / 140 / 240 /
280mm
(remove & reinstall
ODD bracket to mount
280mm radiator)
325mm max (w/o front radiator & HDD cage)
140mm (HDD cage in backmost position)
6.4kg
Carton dimension (L x W x H)
MASTERBOX MB400L
Palette & Brush
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.
FEATURES
Brushed Front Panel – A brushed finish spans the entire
front panel for an elegant and minimalistic design.
Hexagon Gleam – The Cooler Master hexagon on the
front panel relays light from optional, illuminated fans. If
an optional RGB or ARGB fan is installed behind the front
panel, the hexagon 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.
PACKING INFORMATION
SPECIFICATIONS
Brushed Front Panel
Hexagon Gleam
Mesh Intakes
A brushed finish spans the
entire front panel for an
elegant and minimalistic
design.
Adaptable Drive Cage
The Cooler Master hexagon on
the front panel relays light
from optional, illuminated fans.
If an optional RGB or ARGB fan
is installed behind the front
panel, the hexagon will capture
light from the fan and emit a
glow on the front panel.
Large, mesh intakes span
each side of the front panel
to provide additional
airflow to system.
Versatile Cooling Options Room For Upgrades
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.
Support for up to six fans
and front, top, and rear
radiator support ensure
that performance is not
compromised.
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.