The HP StorageWorks DAT 40 USB Tape Drive is a dependable entry-level backup solution for smaller servers and workstations. This DDS-4 tape drive stores 40 GB of compressed data on a single cartridge at a rate of 23 GB/hr (assuming 2:1 data compression), providing an ideal balance between capacity and performance. The HP StorageWorks DAT 40 USB Tape Drive features a native USB 2.0 interface providing plug-and-play simplicity - the hardware can be ready for backup in less than 60 seconds, straight out of the box. The DAT 40 USB drive is available to suit most environments, both as an internal and external stand-alone drive. It reads and writes DDS-4, DDS-3, and DDS-2 formats, making it compatible with many most legacyolder drives.