Cooler Master MasterBox MB311L ARGB Micro-ATX Airflow PC case with Two pre-Installed ARGB Fans, a Fine Mesh Front Panel, Mesh Side Intakes, & Tempered Glass Side Panel
The MasterBox MB311L ARGB is a Micro-ATX airflow PC case pre-installed with two ARGB fans and made to be built with the latest gaming hardware.  The front panel’s façade is made entirely of Fine Mesh, placed between two honeycomb vents on either side to maximize airflow. Since running the latest games, smoothly, means keeping the latest hardware efficiently cooled, top panel ventilation offers the option to add even more cooling hardware—if nothing is mounted, the top panel acts as passive ventilation.
The internal layout was engineered for a high compatibility for the latest gaming hardware while also accounting for future upgrades. Following in the principles of the award-winning MB Series, versatility is paired with presentation to ensure that any gaming system built inside the MasterBox MB311L ARGB looks as good as it performs.
FINE MESH FRONT PANEL
Cooler Master’s Fine Mesh design on the front panel is proven to provide proficient airflow while filtering out dust.
MESH INTAKES
Large, mesh intakes span each side of the front panel to provide additional airflow to system.
DUAL ARGB FANS
Two pre-installed 120mm ARGB fans can be managed by the motherboard, and connected by the included splitter, to create a comprehensive ARGB lighting system.
OPTIMIZED AIRFLOW
Airflow is optimized by a collaboration between the Fine Mesh front panel, additional mesh intakes, top panel ventilation, and rear exhaust.
TEMPERED GLASS SIDE PANEL
Hardware, custom-loop cooling, and the pure pride of the builder is shown in panoramic view through an edge-to-edge tempered glass side panel.
ADAPTABLE DRIVE CAGE
The drive cage is 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.
 Fans
 Radiators
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.
SICKLEFLOW PWM FANS INCLUDED
Newly Optimized blade design with updated curve that provides best balance between airflow and static pressure to take the heat away while remain extremely silence.
SPECIFICATIONS
Model NumberMasterBox MB311L ARGB: MCB-B311L-KGNN-S01, MasterBox MB311L ARGB with Hub: MCB-B311L-KGNN-S02
Color(s)Black
MaterialsSteel, Mesh, Plastic, Tempered Glass
Dimensions (L x W x H)435.5 x 217.5 x 410mm
Weight5.47kg
Motherboard SupportMicro ATX, Mini ITX
Expansion Slots4
5.25" Drive BaysN/A
3.5" Drive Bays2
2.5" Drive Bays2
I/O Panel2x USB 3.2 Gen 1 (USB 3.0), 1x 3.5mm Audio Jack, 1x 3.5mm Mic Jack
ARGB ControllerMasterBox MB311L ARGB: 1x ARGB 1-to-3 Splitter, MasterBox MB311L ARGB with Hub: 1x ARGB Hub
Pre-installed Fans - Front2x 120mm CF120 ARGB Fan
Fan Support - Top2x 120/140mm
Fan Support - Front3 x 120mm* / 2 x 140mm, *can only mount behind the front plate
Fan Support - Rear1x 120mm
Radiator Support - Top120mm, 240mm
Radiator Support - Front120mm, 140mm, 240mm, 280mm
Radiator Support - Rear120mm
Clearance - CPU Cooler166mm/6.54"
Clearance - PSU140mm (HDD cage in backmost position), 325mm (w/o front radiator & HDD cage)
Clearance - GFX344mm
Cable Routing18-22mm
Dust FiltersTop, Front, Bottom
Power Supply SupportBottom Mount, ATX
Warranty2 years
SeriesMasterBox Series
SizeMini Tower