Hard Drive Caddy for Dell Server PowerEdge 2970 6900 6950 R610 (2.5" SAS SATA Hard Drive Tray Caddy) Compatible Part Number: KF248 It works for the following PowerEdge Servers: PowerEdge 1900, PowerEdge 1950, PowerEdge 1955, PowerEdge 2900, PowerEdge 2950, PowerEdge 2970, PowerEdge 6900, PowerEdge 6950, PowerEdge R610