Cooler Master MasterBox Q300L Mini Tower Case

The Cooler Master MCB-Q300L-KANN-S00 is a mini tower case designed to offer flexibility and efficient use of space for your PC build. It supports Micro-ATX and Mini-ITX motherboards, making it a solid choice whether you are assembling a compact workstation, a gaming rig, or a general-purpose computer. The interior is roomy enough to fit graphics cards up to 14.2 inches long and CPU coolers up to 6.2 inches tall, which covers a wide range of popular components without forcing compromises.

This case features an edge-to-edge transparent acrylic side panel that lets you showcase your build clearly, perfect for those who want to highlight their hardware or RGB lighting. It also includes magnetic dust filters on the front, top, and bottom, which help keep your system clean and running smoothly by preventing dust buildup. The fully ventilated design supports excellent airflow, enhanced by a pre-installed 120 mm rear fan and multiple options for adding more fans or radiators, so your components stay cool under load.

Storage options are well thought out, with space for one 3.5-inch hard drive and two 2.5-inch solid-state drives, giving you flexibility to balance capacity and speed. Cable management is made easier with 1.1 inches of hidden routing space, helping you maintain a tidy interior that improves airflow and aesthetics. The adjustable I/O panel, which includes two USB 3.0 ports and audio jacks, can be positioned for easy access whether the case is placed vertically or horizontally, adding convenience in different setups.

Overall, this case is a practical and versatile option for both first-time builders and experienced PC enthusiasts who want a compact, well-ventilated case that doesn’t limit component choices or customization.

• Supports Micro-ATX and Mini-ITX motherboards
• GPU clearance up to 14.2 inches (360 mm)
• CPU cooler clearance up to 6.2 inches (159 mm)
• Pre-installed rear 120 mm fan for cooling
• Fully ventilated with magnetic dust filters on all sides
• Edge-to-edge transparent acrylic side panel
• Adjustable I/O panel with two USB 3.0 ports and audio jacks
• Space for 1x 3.5-inch HDD and 2x 2.5-inch SSDs
• 1.1 inches of hidden cable management space
• Compatible with ATX power supplies up to 6.3 inches (160 mm)