Cooler Master MasterBox Q300L mATX Mini Tower Computer Case - Black

Cooler Master MasterBox Q300L mATX Mini Tower Computer Case - Black

  • I/O panel can be adjusted in 6 different locations and the Case can be positioned: vertical or horizontal
  • Edge-to-Edge Acrylic Transparent Side Panel offers a full view inside
  • Body depth height: can support normal size ATX power supply
  • Front Magnetic Design Dust Filter with open perforated front, top and bottom for high air performance
  • Extra space behind the motherboard tray for hidden cable management


Cooler Master Q 300L


The MasterBox Q300L is your straightforward option in the MasterBox Q-series from Cooler Master, a series that might be small in size but excels in functionality, modularity, and thermal performance.


The I/O panel can be adjusted to six different locations—on both side of the body you can install the I/O panel at the front, top or bottom.


Patterned magnetic filters create a unique look for your chassis while keeping your system's internals free from excess dust.


Despite the Micro-ATX form factor and the body depth/height of only 370 x 370mm, the MasterBox Q300L can accommodate a normal ATX PSU.


Show off your build through the full size transparent side panel.


The open design of the perforated front, top, and bottom guarantees excellent thermal performance.


A space 28mm-wide behind the motherboard tray offers open space for hidden cable management.



Product Number MCB-Q300L-KANN-S00
Available Color Black
Materials Steel, Plastic
Dimensions, L x W x H 387 x 230 x 378mm
Motherboard Suport Micro-ATX, Mini-ITX
Expansion Slots 4
Drive Bays 5.25" 0
3.5" HDD 1
2.5" SSD 2
I/O Port USB 3.0 x 2, Audio In/Out
Pre-Installed Fan(s) Front n/a
Rear 120mm x1
Fan Support Front 120 / 140mm x2
Top 120mm x2
Rear 120mm x1
Bottom 120mm x1
RGB Controller Included
Radiator Support Front 120mm x1 / 240mm x1
Rear 120mm x1
Clearances CPU Cooler 157mm
PSU 160mm
GPU 360mm
Cable Routing Behind MB Tray 28mm  
Dust Filters Bottom  
Power Supply Support Bottom Mount, ATX PS2  
EAN Code 4719512065488  
UPC Code 884102038006  
Net Weight 3.7 kg  
Gross Weight 4.7 kg  
Carton Dimensions, L x W x H 435 x 276 x 461mm  


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