This product is either discontinued or we cannot get that from suppliers.
Dell 400-ATII Hot Plug Hard Drive, FF 2.5", Interface SAS, Data Transfer Rate 12Gbps, Speed 15000 rpm, Designed For EMC PowerEdge C6420 (2.5"), R440 (2.5"), R640 (2.5"), R6415 (2.5"), R740 (2.5"), R740xd (2.5"), R7415 (2.5"), R940 (2.5").
DELL 300GB 15K RPM Sas 12GBPS 512n 2 5 Hot Plug Hard Drive CK (400-ATII) Increase the storage capacity of your system with the 300GB Hard Drive from Dell.