Sans Digital TowerRAID TR4U-B 4 Bay SATA to USB 2.0 JBOD/Spanning Enclosure (Black) Accessesfour hard drives using only one cable. Host interface: USB 2.0. Drive interface: 4 x 3.5" SATA I / SATA II hard drive. Supports thelatest 2TB Hard Drive. Up to 8TB in storage capacity. (*Max. 2TB volume when in Spanning mode). Supports Windows 2000, XP, Vista, and Windows Server 2003, MAC and Linux.