SILVERSTONE SST-RM31 Rack server case — Rack form factor, support for SFX/SFX-L PSUs, 2×3.5 inch + 2×2.5 inch bays, USB 3.2 Gen1

The SILVERSTONE SST-RM31 is a rack-mount server case designed for compact rack systems and server deployments. With dimensions of 438×488×132 mm and a grey/black steel construction, this chassis accepts SFX and SFX-L power supplies and supports motherboard form factors from Mini-ITX up to EATX and SSI EEB. The RM31 provides two 3.5" and two 2.5" drive bays, front provision for 120 mm fan mounting and a rear 60 mm fan location, plus two front USB 3.2 Gen1 (Type-A) ports for fast external connectivity.

Advantages

The RM31 combines a compact 1U/2U-style rack footprint with broad motherboard compatibility, enabling dense server builds in limited rack space. Steel construction ensures structural rigidity for server workloads while support for both SFX and SFX-L power supplies allows flexible PSU choices. Integrated front USB 3.2 Gen1 ports and multiple internal drive bays simplify connectivity and storage expansion without increasing chassis size.

Suitable for

• Small rack servers and compact rack-mounted workstations
• High-density storage or compute nodes with mixed 3.5" and 2.5" drives
• Systems requiring SFX or SFX-L power supply configurations
• Environments needing front-panel USB 3.2 Gen1 connectivity

Key specifications

• Form factor: Rack-mount server chassis
• Dimensions (W×D×H): 438 × 488 × 132 mm
• Material: Steel
• Colours: Grey, Black
• Supported motherboard form factors: Mini-ITX, Micro ATX, ATX, EATX, SSI CEB, SSI EEB
• Power supply compatibility: SFX, SFX-L
• Drive bays: 2 × 3.5" and 2 × 2.5"
• Cooling support: Front support for 120 mm fan(s); rear 60 mm fan location
• Front I/O: 2 × USB 3.2 Gen1 Type-A

How to use

Install the chosen compatible motherboard and mount SFX or SFX-L power supply according to the chassis mounting points. Secure 3.5" and 2.5" drives in the designated bays and route SATA/data cables to the motherboard. Fit front 120 mm fan(s) and a rear 60 mm fan if additional airflow is required. Connect front-panel USB ports to the motherboard headers. Slide the assembled chassis into a compatible rack space and fasten with rack-mount hardware appropriate to your rack rails.

Recommendations

For stable operation in rack environments, verify clearance and rail compatibility before installation, select quality SFX or SFX-L power supplies that meet your system power requirements, and plan airflow by using the front fan positions and rear fan location to establish front-to-back cooling. Use appropriate anti-vibration mounting for hard drives and secure cabling to maintain airflow and serviceability.