Sans Digital TowerRAID TR4M 4 Bay SATA to eSATA Port Multiplier JBOD/RAID 0, 1, 1+0, 5 Enclosure (Silver) Accesses fourhard drives using only one cable. Host interface: eSATA with Port Multiplier. Supports RAID 0, 1, 10, 5, 5+ spare, spanning and JBOD using bundles software utilities. Drive interface: 4 x 3.5" SATA I / SATA II Hard drive. Supports thelatest 1TB Hard Drive. Up to 4TB in storage capacity. Supports Windows 2000, XP, Vista, and Windows Server 2003. Supports MAC and Linux