Mfr Part Number: RM24508M3RP5. Case Type: 2U Rackmount. Material: N/A. M/B Type: ATX (12. 0 x 9. 6 inch). Drive Bays: External: 8x 3. 5" Hot-Swap. Internal: 2x 2. 5" 1x Slim ODD. Expansion Slots: 7x Low Profile or 3x. Full Height. Backplane: 8-port 12Gb/s mini-SAS HD Passive. Cooling System: Middle - 3x 80mm (up to 4), PWM (Hot-swap). Front Panel: Front Control: Power On/Off, System Reset, UID. Indicator: Power Status, 2x LAN Activity, UID, HDD Status, System status. Ports: 2x USB 3. 0 Ports. Power Supply: 500W 1+1 CRPS Redundant. Dimensions (WxDxH): 17. 2 x 22. 0 x 3. 5 inch / 438. 0 x 559. 0 x 87. 0 mm. Weight: 9. 5 kg