1U 4x hot swap SAS |SATA 6Gb/s JBOD w/ESATA 1U rack mount hot swap four SATA/SAS drive - 6Gb/s 4 esata interface (6Gb/s per channel) Rack mount Rail including Compatible with SSD, SATAI, II, III and SAS 3Gb/s, SAS 6Gb/s Support RAID controller from: ADAPTEC, High Point, Areca... and many