| Model Name | RM21706 |
| Standard | EIA-RS310D |
| M/B Form Factor | Extended ATX (12"x13"), CEB (12"x10.5"), ATX (12"x9.6") |
| Dimension (DxWxH) | 26" x 16.9" x 3.5" |
| Drive Bay | External: 5.25" x 1, 3.5" x 1 (Occupy Slim CD-ROM/FDD space) |
| Slim CD-ROM:1, Slim FDD:1, Hot-Swap HDD Tray: 6 |
| PSU | Form Factor: Single, Redundant, Watt: Up to 650 W |
| Indicator | 1 x Power Status LED, 1 x HDD Activity LED, 2 x LAN Activity LEDs. |
| 1 x Fan Failure & Overheat Warning |
| Front Control | Power ON/OFF, Alarm Mute, System Reset, 2x USB 2.0 Ports |
| System Security | Intrusion Switch |
| Cooling Fan | Front: N/A, Middle: 4 x 80mm (T=32mm) non hot-swap middle fans |
| or optional 1 x 60 mm (T=25mm) & 3 x 80mm (T=32mm) hot-swap middle fans |
| Rear: Optional 2x 40mm rear fans |
| Slot Opening | 3 x full height or 6 x low profile |
| Plastic Material Type | ABS-HB |
| Sheet Metal Material Thickness | SGCC/1.2mm |
| Backplane | SATAII/SAS |
| Rear Window | Low Profile or Standard |
| Front Bezel | Optional |
| Cubic Feet | 4.23 |