This product is either discontinued or we cannot get that from suppliers.
Hard drive - hot-swap, 1 TB, Form Factor 3.5", SATA 6Gb/s, 600 MBps (external), 7200 rpm.
Dell 1TB 7.2K RPM SATA Hot-Plug Hard Drive 6GBPS 512n 3.5" Desktop Drives (400-ATJJ) Increase the storage capacity of your Dell™ System with 1TB Hard Drive from Dell.