The Cooler Master MasterBox 520 RGB TG Mid Tower E-ATX Case Black (MB520-KGNN-S01) is a high-performance mid-tower chassis designed to accommodate everything from Mini-ITX up to large E-ATX motherboards, making it an excellent platform for high-end gaming and enthusiast workstations. Styled with a sleek black finish and a tempered glass side panel, it features an advanced layout engineered specifically for maximum airflow and modern component compatibility. The case effortlessly supports high-efficiency hardware configurations, including full-sized ATX power supplies and high-capacity liquid cooling arrangements.
A properly configured PC chassis is vital for keeping high-end computer components functioning optimally. The advanced ventilation layout of this case significantly improves internal airflow, delivering direct cooling to heat-generating hardware while keeping system noise low. Generous component clearances comfortably accommodate extra-large graphics cards, tall CPU air coolers, and multi-radiator liquid cooling configurations, while integrated routing channels and extra space behind the motherboard tray streamline cable management.
Motherboard Support: Versatile architecture supporting Mini-ITX, Micro-ATX, ATX, SSI CEB, and E-ATX form factors up to 12 x 10.7 inches.
Cooling Support: Accommodates a CPU cooler height up to 165mm, extensive multi-radiator layouts with simultaneous 360mm radiator support in both the front and top panels, and up to seven total 120mm fan mounts.
Power Supply Compatibility: Standard ATX form factor power supply support with a clearance of up to 200mm, with a recommended maximum length of 170mm for easier cable routing.
Included Features: Pre-installed with three CF120 ARGB fans at the front and one MasterFan Lite 120 fan at the rear, an integrated ARGB fan controller hub, robust dust filtration, and a fully removable top panel for simpler component installation.
In-Store Advice: Guidance on selecting the right case size, airflow design, PSU type, and cooling configuration for gaming, workstation, or compact builds.
Local Support & Advice: Assistance with component fitment, radiator placement, GPU clearance checks, and choosing compatible fans, AIOs, and accessories.
$129.00
In stock
%20Specs.webp)
| Weight | 7.2 kg |
|---|---|
| Dimensions | 50 × 21 × 50 cm |
Compatibility: Ensure your chosen motherboard, GPU length, CPU cooler height, PSU size, and radiator dimensions fit within the case’s supported clearances.
Usage Notes: Actual airflow and cooling performance vary depending on fan configuration, radiator placement, and internal component layout.
| Feature | Specification |
| Model Number / SKU | MB520-KGNN-S01 |
| Case Type | Mid Tower |
| Motherboard Support | Mini-ITX, Micro-ATX, ATX, SSI CEB, E-ATX (up to 12″ x 10.7″) |
| Power Supply Support | ATX |
| Maximum GPU Length | 410mm |
| Maximum CPU Cooler Height | 165mm |
| Radiator Support | Top: 120/140/240/280/360mm; Front: 120/140/240/280/360mm; Rear: 120mm |
| Fan Support | Top: 3 x 120mm / 2 x 140mm; Front: 3 x 120mm / 2 x 140mm; Rear: 1 x 120mm |
| Included Fans | 3 x CF120 ARGB (Front), 1 x MasterFan Lite 120 (Rear) |
| Fan / ARGB Controller | ARGB Fans Hub Included |
| Drive Bays | 2 x 3.5″, 3 x 2.5″ |
| Expansion Slots | 7 |
| Front I/O | 1 x USB 3.2 Gen 1 Type-A, 1x USB 3.2 Gen 2 Type-C, 1 x 3.5mm Headset Jack, 1x Reset/ARGB button |
| Materials | Steel, ABS Plastic, Tempered Glass |
| Dimensions | 51 x 21 x 50 cm |
| Weight | 7.4 kg |
| Included Items | Case, pre-installed fans, ARGB fan hub, accessories, documentation |
