iStarUSA Group 3x5.25" to 4x3.5" SAS Cage Black Trayless (BPN-DE340SS-BLACK) Aluminum Frame, designed for heavy-duty purpose 1-Year Warranty Support SAS I/II, SATA I/II/III Hard Drives Integrative shaping aluminum design for quickest heat sink Data Transfer Rate up to 6.0 Gb/s