Dell TDSourcing - Hard drive - encrypted - 4 TB - hot-swap - 3.5 - SAS 12Gb/s - NL - 7200 rpm - Self-Encrypting Drive (SED) - for Dell EMC PowerEdge C6420 (3.5)/ R640 (3.5)/ R740 (3.5)/ R740xd (3.5)