The ST-5255 is a 5-bay removable rack for 2.5"or 3.5" hard disks that can be mounted in three 5.25" bays. It supports speeds of up to 6 Gb/s and offers the option of a RAID configuration of the installed hard disks (RAID controller required).The hard disks are connected via five individual S-ATA cables (not included), and the power is supplied via two 4pin Molex. An integrated 80mm fan also ensures optimal cooling of the installed hard drives.