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Cooler Master MasterBox Q300L Micro ATX Tower w/ Magnetic Design Dust Filter, Transparent Acrylic Side Panel, Adjustable I/O & Fully Ventilated for Airflow, MCB-Q300L-KANN-S00

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In stock. Limit 3 per customer.
Ships from United States.
  • Box E500L
  • Box Q300L
  • Box Q500L
  • Box Q300L TUF
  • Blue LED
  • Non-LED
  • 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
Overview
Specs
Reviews
Cooler Master

Choose Your Style

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.

Cooler Master

System Flexibility

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.

Cooler Master

Magnetic Dust Filters

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

Cooler Master

Small Form Factor, ATX PSU Support

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.

Cooler Master

Edge-to-Edge Acrylic Side Panel

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

Cooler Master

Thermal Performance

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

Cooler Master

Routing Space

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

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Return Policies

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