Cooler Master MasterBox Q300L Mini Tower Case

Cooler Master MasterBox Q300L

●︎ Micro-ATX and Mini-ITX

●︎ 1 x 3.5" Drive Bay

●︎ 2 x 2.5" Drive Bays

●︎ 4 x Expansion Slots

●︎ USB 3.0 and Audio In/Out Ports

●︎ 120mm Rear Fan Included

●︎ Supports GPUs up to 14.2" Long

●︎ Supports CPU Coolers up to 6.2" Tall

●︎ Clean Routing Space

The MasterBox Q300L Mini Tower Case from Cooler Master supports Micro-ATX and Mini-ITX motherboards. The case features one 3.5" HDD drive bay, two 2.5" SSD drive bays, and four expansion slots. The I/O panel includes two USB 3.0 ports and audio in/out jacks, and it can be adjusted to six different locations, three options at each side. The Q300L supports GPUs up to 14.2" and CPU Coolers up to 6.2" tall. A 1.1" space behind the motherboard tray offers hidden cable management.

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System Flexibility

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

Edge-to-Edge Acrylic Side Panel

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

Clean Routing Space

28 mm of open space for hidden cable management.

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.