Introducing the Icy Dock MB991IK-B 2.5"" SATA/SAS Mobile Rack for use in 3.5"" device bays. This product is constructed of heavy duty SECC metal to hold up in the toughest of conditions. It includes ventilation slots on the front, back, top and bottom for maximum airflow to keep both SATA and SAS drives running cool, and an LED is placed on the front of the device to give the user drive status at all times. The MB991IK-B also utilizes our brand new EZ Slide Mini Trays, making drive interchangeability and maintenance completely hassle free. The trays are built using SECC and lightweight aluminum so that they are durable for many lifetimes, but will not weigh you down when transporting your data from system to system. The trays are also designed to accommodate 9.5mm, 12.5mm, and 15mm drives giving you the ultimate universal 2.5"" hot swap bay. Both SAS and SATA drives are compatible, allowing users to use low power 5400 rpm drives, or 15000 rpm powerhouses, making this product valuable to end users and enterprise server deployment. Similarly, the MB991IK-B supports the new SATA 6Gbps interface for ultra high bandwidth. For enterprise users, a key lock is included to keep your data safe and secure inside the enclosure even if the entire system has been stolen.