3ware 9650SE-4LPML 256MB PCI Express to SATA II RAID Controller Cache Memory Installed - 256 MB DDR2 533 Hard Drive Support - 1-4 drives via included cable, SATA 150 Mbps or 3.0 Gbps, supports S.M.A.R.T drive monitoring Interface - PCI Express x4, x8, or x16 RAID Levels - 0, 1, 5, 10, Single Disk, JBOD Battery Backup Unit (BBU) Support - Yes