CoolerMaster Masterbox MB311L ARGB Mini Tower Cabinet

The MasterBox MB311L ARGB is a compact yet capable mini-tower case optimized for micro-ATX and mini-ITX gaming or productivity builds. With a full-mesh front panel for airflow, tempered glass side panel to showcase internal components, and dual pre-installed ARGB fans, it’s ideal for gamers, content creators and PC enthusiasts seeking strong performance and aesthetic flair in a smaller footprint.

This case features a fine-mesh front panel with side mesh intakes to maximize airflow while filtering dust. It comes pre-installed with two 120 mm ARGB fans, allowing customizable lighting and sync with motherboard ARGB headers. The side panel is tempered glass, showcasing hardware and lighting clearly. The drive cage is adaptable—movable or removable—to accommodate longer GPUs, radiators, or PSUs. Support for up to six 120 mm fans or multiple radiator placements provides flexibility for cooling and future upgrades.

Form Factor: Mini-Tower / supports Micro-ATX & Mini-ITX
Motherboard Support: Micro-ATX, Mini-ITX
Materials: Steel, Plastic, Fine Mesh, Tempered Glass Side Panel
Dimensions (H × W × D): Approx 435.5 × 217.5 × 410 mm
Maximum GPU Length: Up to ~344 mm
Maximum CPU Cooler Height: Up to ~166 mm
PSU Support: Up to ~325 mm length when drive cage removed
Drive Bays: 2 × 2.5″ (dedicated) + 2 × 2.5″/3.5″ combo
Pre-Installed Fans: 2 × 120 mm ARGB (front)
Fan Support: Front – 3×120 mm / 2×140 mm
Top – 2×120/140 mm
Rear – 1×120 mm
Radiator Support: Front – up to 280 mm
Top – up to 240 mm
Colour: Black

System Requirements: Compatible ATX power supply, Micro-ATX or Mini-ITX motherboard, clearance for GPU, cooler and PSU within listed dimensions.
Usage Environment: Gaming PCs, compact workstations, small-form-factor systems, and showcase builds where styling and cooling both matter.
Included Accessories: Case chassis, tempered glass side panel, pre-installed ARGB fans, front I/O cables, dust filters, accessory kit.