Drive: SAS & SATA Dimensions: 5.7" x 3.3" x 7.3" Weight: 1.87 lbs. Features: Interface: SATA I, SATA II, SATA III & SAS Primary Channel Form Factor: For 3 x 3.5" SAS/SATA HDD; 2 x 5.25" Bay for 3HDD Fan: 50mm x 1 HDD Connection: Cableless HDD Connection Transfer Rate: Up to 6.0 Gbps (SAS & SATA III) and 1.5 Gbps (SATA I) Material: Aluminum Frame & Plastic Bezel Mechanical Sliding Lock Support Hot-Swap Meshed Air-Ventilation Holes Led for Power Indication Parts: 1 year limited