DELL 405-10840, SAS, PCI Express x8, 0, 1, 5, 6, 10, 50, 60, 256 MB, DDR2 DELL 405-10840. Supported storage drive interfaces: SAS, Host interface: PCI Express x8. RAID levels: 0, 1, 5, 6, 10, 50, 60, Internal memory: 256 MB, Internal memory type: DDR2