Add either 2 5 or 3 5 sassata drives to a satsasbay3bk metal slide springs help reduce vibration and 12 air ventilation openings assist in keeping the drive cool maximize performance with file transfer speeds up to 6gbps when paired with sata iii hdd and controller compatible with satsasbay3bk backplane supports 2 5in and 3 5in form factor satasas hard drives hdd and solid state drives ssd steel vibration reducing springs on side of tray 12 ventilation openings flammability rating