Seagate STD6401LW 20/40GB Compressed capacity DDS-4 DAT external tape drive with data transfer speeds up to 5.5MB/sec, or 19.8GB/hr. LVD SCSI Interface. Tape drive is in a Dell PowerVault 100T. Dell P/N is H835. Enclosure is 9 x 7.25 x 2.5 inches, with AC Power.