Cavalry CAXB Series USB 3.0 / eSATA 2 TB 7200 RPM External Hard Drive CAXB3702T0 USB 3.0 (USB 1.1 backwards compatible) and eSATA interface Plug and play for Windows 2000 and newer (pre-formatted to NTFS) Unit Includes - 2 TB 3.5-inch 16 MB cache hard drive in a single bay aluminum enclosure, USB cable System Requirements - Available USB or SATA port, Mac OS 9.x or newer, Windows 98SE / Me / 2000 / XP / Vista 1 year manufacturers warranty