Drive: SATA 150 & 300 Hot-spares: Yes Power Supply: 220W (103V-253V) Dimensions: 6.0" x 8.25" x 11.0" Weight: 9.3 lbs. Features: Form Factor: Compact Tower Maximum Capacity: 15TB Auto Rebuilding: Yes Cooling Fan: 4.7" Ball Bearing Fan Status Indicators: Status and Power LEDs Safety Regulations: CE, FCC, UL, RoHS Bundled with SATA 6.0Gbps PCIe 2.0 x1 controller card. Supports PCIe 2.0 with over 200MB/s performance. Backward compatible with PCIe 1.0 slot. Supports SATA I (1.5Gb/s) and SATA II (3Gb/s) hard drives. Over 2TB per volume via eSATA and USB on OS that supports 2TB or above. Automatic insertion / removal detection and rebuild. Compact and stylish 5-bay tower design with protective ventilating cover.