SC5400 4-drive hot-swap, expander, SATA/SAS backplane assembly Requires 2 SAS ports from baseboard, ROMB card or RAID card and is compatible with SAS or SATA 3.5 hard drives.Includes- Backplane board, 4 drive carriers, 2 data cables, 4-drive bay, IPMB cable,common installation guide, SATA/SAS configuration label. Not supported in SC5400BASE.