Cooler Master Q300L V3 mATX Cabinet White

Features Q300L V3 White (Lite Version) Handle-free version retaining the Q300L design identity. QUBE Family Modular DNA Inspired by the modular philosophy of the QUBE family, QUBE 340 introduces flexible customization options for small but powerful builds. Optional handles, flexible front I/O placement, and front panel mounting points for 3D-printed accessories allow users to personalize both aesthetics and functionality. The chassis also supports vertical or horizontal placement, continuing the adaptable design approach seen in QUBE 540 and Q300L. Thermal Performance Upgrade Designed under Cooler Master’s Thermal Excellence philosophy, QUBE 340 enhances cooling capability with larger front panel perforations for improved airflow intake, support for up to 6 fans, and an upgraded 140 mm rear exhaust configuration. Increased CPU air cooler clearance up to 178 mm further enables strong air-cooling performance for mainstream high-TDP systems. Improved Structure An improved motherboard tray and optimized fan mounting layout enhance chassis stability, while enlarged front panel perforations improve airflow intake efficiency for better cooling performance. Easy Build Experience Optimized internal layout with 30 mm cable routing space enables clean cable management and an intuitive building process for both first-time builders and system integrators. Hardware Compatibility Supports GPUs up to 366 mm (without front fan installed) and accommodates mainstream high-TDP air coolers, ensuring strong hardware compatibility within a small form factor. Specifications: Product Name: Q300L V3 Product Number: Q300LV3-WGNN-S00 Exterior Color: White Materials: SGCC + TG / Mesh Dimensions (L x W x H): Incl. Protrusions: 386.1 x 230 x 388.5 mm Excl. Protrusions: 374 x 230 x 374 mm Volume (incl. Protrusions): 34.5 L Volume (excl. Protrusions): 32.17 L Motherboard Support: Mini-ITX, Micro-ATX Expansion Slots: 4 Drive Bays: 5.25” Drive Bay: NA 3.5” Drive Bay: 1 3.5” / 2.5” Combo: 1 2.5” Drive Bay: 2 (max 4) I/O Panel: 2 x USB 3.2 Gen1 Type-A 1 x USB 3.2 Gen 2x2 Type-C 1 x 3.5 Mic / Audio Combo Jack x1 Fan Support: Front: 2 x 120mm / 2 x 140mm Top: 2 x 120mm / 2 x 140mm Rear: 1 x 120mm / 1 x 140mm Bottom: 1 x 120mm / 1 x 140mm Pre-installed Fans: Rear: 1 x 140 mm non-ARGB Black Radiator Support: Front: 240 / 120 mm Top: 240 / 120 mm Rear: 120mm Clearances: CPU Cooler: 178mm Power Supply: 200mm (without bottom fan installed) / 140mm (with bottom fan installed) Graphics Card: 366mm (without front fan installed) Cable Routing (Behind MB Tray): 30mm Power Supply Support: ATX Dust Filters: Top / Front / Bottom Warranty: 2 Years Note*: Price, feature and specifications are subject to change without notice.