Dell X7K8W SAS-SATA 3.5in LFF Hard Drive Tray/Caddy - ServerSupply.com
Dell X7K8W-AMC Hard Drive Tray - 3.5-inch - SATA / SAS (Refurbished) - Walmart.com
Amazon.com: 3.5" X7K8W SAS SATA Hard Drive Caddy Tray Enclosure with 2.5" 9W8C4 Hard Drive Adapter Bracket for DELL 14th Gen PowerEdge Servers R440 R540 R640 R6415 R740 R740xd R7415 R7425 C6420