iStarUSA Group 1x5.25 Bay SAS/SATA 6.0 Gb/s Trayless Hot-Swap (BPN-DE110SS-BLACK) Aluminum frame, light weight and durability design Tray-less and Screw-less HDD mounting Aluminum front bezel with metal key lock mechanism for security Integrative shaping aluminum design for quickest heat sink Supports SAS I/II, SATA I/II/III Hard drives