Cooler Master MasterBox Q300L

Cooler Master MasterBox Q300L

Patterned Magnetic Dustfilters

Special pattern on the dust filter creates a unique outlook for the chassis.

Modular I/O Panel

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.

Multiple Positioning Options

The case can be put in vertical or horizontal position.

Edge-To-Edge Side Panel

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

Clean Routing Space

Behind the motherboard tray, it offers 28mm wide and spacy room for hidden cable management.

Excellent Thermal Performance

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

Fan and Radiator Support

The front supports up to two 140mm fans and up to a 240mm radiator. The rear supports a 120mm fan or radiator and the top two 120mm fans. All to ensure you don't have to compromise on performance.

• Mini ITX motherboard builds a perfect symmetry of hardware components required in media server or NAS box


• 3 bays for a tailor-made PC configuration


• For a better airflow, mid-tower structure supports up to 6 fan(s) with ample space to store hardware