


Built for Performance & Style
The QUBE 340 / Q300L V3 is a compact Micro-ATX PC case designed for serious performance. Engineered with Cooler Master’s Thermal Excellence, it maximizes airflow to keep your system cool and stable - even with high-TDP components. Designed to accommodate longer GPUs and taller air coolers, it provides rigidity and efficient layouts with optimized airflow.
Its modular design offers repositionable I/O panels, vertical or horizontal orientation, and support for accessories like handles and 3D-printable components. Ideal for DIY builders and system integrators, the QUBE 340 / Q300L V3 provides a smooth, straightforward building experience while allowing you to personalize both aesthetics and functionality.
Built for Performance & Style
The QUBE 340 / Q300L V3 is a compact Micro-ATX PC case designed for serious performance. Engineered with Cooler Master’s Thermal Excellence, it maximizes airflow to keep your system cool and stable - even with high-TDP components. Designed to accommodate longer GPUs and taller air coolers, it provides rigidity and efficient layouts with optimized airflow.
Its modular design offers repositionable I/O panels, vertical or horizontal orientation, and support for accessories like handles and 3D-printable components. Ideal for DIY builders and system integrators, the QUBE 340 / Q300L V3 provides a smooth, straightforward building experience while allowing you to personalize both aesthetics and functionality.