ICY DOCK FlexCage MB974SP-2B Tray-less 4 x 3.5 Inch HDD in 3 x 5.25 Inch Bay SATA Cage - Front USB 3.0 Hub Fits 4 x 3.5" SATA III HDD into 3 x 5.25" Device Bays. Supports SATA 3 (6 Gb/s) hard drives. Compact and space saving design to fit multiple drives.