Supermicro PCI Express x4 Low Profile SAS RAID Controller (AOC-SASLP-MV8) PCI-E x4 interface Software RAID supported Storage arrays for Network Attached Storage (NAS) and Nearline Backup Up to 8 SAS/SATA disk drives, activity LED indicated for each drive (LED cables not included Data Transfer Rates: Upto 3.0 Gigabits/sec per port