Drive bay: turn 3×5.25' drive bay to 5×3.5' hot-swap drive bay Interface: SATA to SAS,SAS to SAS Fan sensor: Fan failure sensor Alarm: overheating alarm Cooling system: 1×80mm ball baring fan with air duct providing excellent cooling air flow RAID: support RAID 0,1,5,6,10 functions( Raid card required) Power connector: 2×4-pin molex power connector Data connector: 5×SATA( I or II or III) /SAS data port Dimension(L×W×H): 22×13×15 inch Weight: 5.5 lbs 5×3.5' Hot-swap HDD trays Hot-swap module Supporting 5 Bay SATA-I (or SATA-II) /SAS Hot-swap Steel material, ROHS compliance Electromagnetic shield design Redundant 4-pin molex power connectors Support hot-swap Supporting all operating systems Ball bearing fan with air duct Supporting RAID 0,1,5,6,10 functions( Raid card required)