Free Express Shipping! iStarUSA Trayless 3 x 5.25" to 5 x 3.5" 12 Gb/s HDD Hot-Swap Rack (Black) Convert 3 x 5.25" Drive Bays to 5 x 3.5", Supports SAS III & SATA III Hard Drives, Transfer Rates up to 12 Gb/s, Hot Swap Support