Sans Digital TowerRAID TR8M 8 Bay SATA to eSATA Port Multiplier JBOD/RAID 0, 1, 1+0, 5 Enclosure (Silver) Eight 3.5-inch SATA hard disk drives to two eSATA Port Multiplier interfaces. Accesses eight hard drives using only two cables. Supports JBOD, Spanning, RAID 0, 1, 1+0, 5 with spare in two volume sets via software utilities. Cable-less backplane design support hot-swappable SATA I and SATA II. Bundled with 2-port eSATA PCIe 1x Host Bus Adapter. Supports Plug & Play for easy installation. Supports Plug & Play for easy installation. Compact enclosure with dust-free cover. Support PC, Mac, and Linux. (Please note that the host adapter card is based on Silicon Image chipset, which currently only support up to MAC OS 10.5.1 by Silicon Image.)