Introducing the DataCage Basic MB876SK-B, a single 3.5” SATA 6Gbps mobile rack for optical 5.25” bay features our successful EZ-Tray removable tray system. It features a slim, yet durable profile with key lock design and only taking up a single 5.25” optical bay. It is ideal for home and professional server environments requiring hot swap for backups, security and a reliable active cooling solution.