MB994SP-4SB-1, a full metal hot swap backplane RAID cage capable of storing four 2.5″ SATA 6Gbps SSD & HDD up to 15mm height hot swap backplane RAID cage in a 5.25″ device bay. The MB994SP-4SB-1 uses a SATA only interface with dual 40mm cooling fans in addition to the a power switch to allow for the more flexibility. This product is constructed of heavy duty metal to hold up in the toughest of conditions, as well. LEDs are placed on each drive tray to help monitor your drives. The included EZ Slide Mini Trays also allows multi drive interchangeability between other compatible Icy Dock products. This device is suited for applications such as: Medical & Military systems, Media servers, IPCs, HTPC, and All-In-One computers.