Versatile Micro-ATX Design
The Cooler Master MasterBox Q300L is designed to be compact and practical, with a focus on airflow and cable management. Its minimalist aesthetic makes it a great addition to any workspace or gaming setup.
- Supports up to 6 fans for optimal cooling
- Tempered glass side panel for showcasing your build
- Multiple I/O ports including USB 3.0
Whether you’re building a budget gaming rig or a functional workstation, the MasterBox Q300L offers flexibility and style.



Jake R.
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Perfect size for my build and looks great!
Samantha W.
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Good case but it could use better airflow options.
Oliver T.
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Amazing value for the price!