PowerEdge 830 tape drive question

does anybody know what the exact tape drive I have on my system ? this from the dell system's info

1 R3999 TAPE BACKUP UNIT, 36/72G, HALF HEIGHT, INTERNAL, S, DAT72

1 G4058 MODULE, TAPE BACKUP UNIT, 36GB, HALF HEIGHT, NO CONTROLLER/NO CABLES, INTERNAL, DAT72

1 T5427 ASSEMBLY, CABLE, SCSI (SMALL COMPUTER SYSTEMS INTERFACE), 68P, 1DROP, LOW VOLTAGE DIFFERENTIAL