Cooler MasterBox Q300L

Cooler Master MasterBox Q300L Micro-ATX Tower with Magnetic Design Dust Filter

The Cooler Master Box Q300L is your straightforward option in the lineup of the brand new Master Box Series from Cooler Master. A series that might be small in size but excels in functionality and modularity without compromising on the thermal performance.

The combination of a practical design and the unique customizable aesthetic makes the Q300L the perfect choice for office and home use.

Although the size wouldn’t tell, the Master Box Q300L supports a standard ATX PSU which we don’t see often in the market with this size. Based on the different system setup, the I/O panel can be adjusted to six different locations, with three options on each side of the case.

Edge-to-Edge Acrylic Side Panel:

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

You can decide which setup fits your system best. The cube design of the frame and the special pattern design on the magnetic dust filter will make the chassis stand out from the rest.

Make It Yours:

We’re all about the things that make building a PC such a rewarding experience. The sense of achievement. The joy of making and creating something uniquely yours in form and function and, of course, the thrill of bringing your creation to life without melting your components.

Clean Routing Space:

28 mm of open space for hidden cable management.

The combination of a practical design and the unique customizable outlook makes the Master Box Q300L The perfect choice for office and home.

Small Form Factor, ATX PSU Support:

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

System Flexibility:

6-orientation I/O panel—both sides: front, top, and bottom.

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.