Synology RX418 Drive Enclosure - 1U Rack-mountable - 4 x HDD Supported - 4 x SSD Supported - 4 x Total Bay - 4 x 2.5"/3.5" Bay - Serial ATA - eSATA - Cooling Fan
StarTech.com Dual-Bay 2.5in to 3.5in SATA Hard Drive Adapter Enclosure with RAID - Supports SATA III & RAID 0, 1, Spanning, JBOD Aluminum - SATA/600 - Serial ATA/600
StarTech.com 5.25 to 3.5 Hard Drive Hot Swap Bay - Trayless - Aluminum - For 3.5" SATA/SAS Drives - Front Mount - SAS/ SATA Backplane - 1 x HDD Supported - 1 x 3.5"
StarTech.com 2.5 SATA Drive Hot Swap Bay for 3.5" Front Bay - 2.5in SATA SSD/HDD Hard Drive Rack - Anti-Vibration - Mobile Rack - 1 x HDD Supported - 1 x SSD Support
StarTech.com Dual Bay SATA HDD Docking Station for 2 x 2.5 / 3.5" SATA SSD / HDD - USB 3.0 - SATA Hard Drive Docking Station - Hot Swappable Bays - 2 x HDD Supported