Dshot&reg; 5.25'' inch Trayless Hot Swap Mobile Rack for 3.5in Hard Drive - Internal SATA Backplane Enclosure Quickly and easily install or remove hard drives without having to open the chassis with the innovative trayless design Holds a 3.5" SATA drive in a front accessible 5.25" bay Trayless design: drives are not mounted into separate trays/enclosures Lockable drive bay