NORCO SS-500 5-Bay SATA / SAS Hot Swap Rack Module. Five-Bay SATA (I, II or III) / SAS 6G Hot Swap Module. Steel material, RoHS compliance. Electromagnetism shield design. Support two 4-pin power connectors. Ball bearing fan with air duct. Patent balance handle - No skew in/out. LED indicators. Support hot swap. Support all operating systems. Supports RAID 0, 1, 5 functions (RAID card required)