SilverStone RM53-502 5U Rackmount Server Chassis, Dual 5.25" Bays, 360mm Radiator Support, Black | SST-RM53-502
Model :
SKU : ATX-SILVERST SST-RM53-503
RM53-502
Supports up to SSI-EEB motherboards
Universal hard drive cage design supports 5.25", 3.5" and 2.5" storage devices
Supports 360mm liquid cooling radiator
Security lock fitted on the front removable door
Dual PSU support for PS2 (ATX)+SFX PSU, Mini Redundant, or 2U CRPS Redundant
Upright or horizontal placement flexibility
8 PCI expansion slots
Provides additional cooling solutions for graphics cards
Description

The SilverStone RM53-502 (SST-RM53-502) is engineered for IT professionals and system integrators who need a spacious 5U rackmount chassis capable of housing expansive storage arrays and high-wattage liquid-cooled processors. By combining legacy 5.25" bay accessibility with advanced radiator mounting options, it bridges the gap between traditional enterprise servers and high-end workstation performance.
• Performance / Technology
The optimized interior layout supports standard server power supplies and various motherboard form factors while ensuring that high-density configurations remain cool and stable under continuous operation.
• Design & Ergonomics
The clean, professional front panel features intuitive access controls, status indicators, and secure rackmounting ears designed for standard 19-inch server racks.
• Compatibility / Use Cases
The ideal server enclosure for enterprise data centers, specialized backup server nodes, audio/video broadcast racks, and liquid-cooled AI workstations.
• Why This Product Stands Out
Many modern server chassis have completely abandoned external optical or drive bays in favor of slim profiles. The SilverStone RM53-502 stands out by retaining dual 5.25" bays while pairing them with modern 360mm liquid cooling support in a sturdy 5U rackmount format.
Specification
Attribute | Specification |
|---|---|
Model No. | SST-RM53-502 |
Chassis Form Factor | 5U Rackmount / Tower Convertible Chassis |
Material | Steel |
Motherboard Compatibility | SSI-EEB, SSI-CEB, Extended ATX, ATX, Micro-ATX, Mini-ITX |
Drive Support | External: 5.25" × 2 (compatible with 2.5" × 4 or 3.5" × 2) Internal: 3.5" × 1 (compatible with 2.5" × 2); 3.5" × 2 (compatible with SFX PSU × 1); 2.5" × 5 (two expansion cards occupy the 8th slot position) |
Cooling System | Front: 120 mm × 3, 80 mm × 3 (2× 80 mm fans included) Rear I/O: 120 mm × 1 / 140 mm × 1 (1× 140 mm fan included) Rear Fan Cage: 80 mm × 2 |
Radiator Support | Front: 120 mm / 240 mm / 360 mm Rear: 120 mm |
CPU Cooler Height Limitation | Single CPU: 178 mm Dual CPU: 101–178 mm |
Expansion Slots | 8 Slots |
Expansion Card Limitations | Length: Up to 454 mm (Without installing front fans and radiators) Width: With GPU holder: 160 mm / Without GPU holder: 185 mm |
Power Supply Support | Primary PSU Slot: PS2 (ATX) / Mini Redundant / 2U CRPS Redundant Secondary PSU Slot: SFX / SFX-L (Occupies 3.5" bracket) |
Power Supply Depth Limitation | Primary PSU Slot: 190 mm (Removal of 3.5" drive cage eliminates PSU depth limitation) Secondary PSU Slot: 130 mm |
Front I/O Ports | 1× USB Type-C, 2× USB 3.0 |
LED Indicators | Power Status: 1× HDD Activity: 1× LAN Activity: 2× |
Dimensions | Including Rear Fan Cage: 440 mm (W) × 220 mm (H) × 530 mm (D) / 51.3 Liters (17.32" × 8.66" × 20.87") Excluding Rear Fan Cage: 440 mm (W) × 220 mm (H) × 485 mm (D) / 46.95 Liters (17.32" × 8.66" × 19.09") |
Net Weight | 11.47 kg (25.29 lbs) |



































