HP StorageWorks LTO-4 Ultrium 1760 SCSI Internal Tape Drive. The EH921B offers the compatibility with earlier LTO-4 and LTO-3 media and has the ability to read LTO-2 cartridges.
IBM 45E1127 800/1600GB Ultrium LTO-4
DELL 59C4D LTO4 MODULE FOR ML6000 SAS TAPE DRIVE IN SLED
HP 465792-001 Storageworks LTO Ultrium-4 SCSI External Tape Drive (EH922A)
HP StorageWorks EML E-series Tape Library LTO 4 FC Ultrium 1840(AH682A) Kit