Introducing the flexiDOCK MB830SP-B professional removable HDD docking enclosure. It offers the ability to hot-swap up to 3 x 3.5-inch SAS and SATA hard drives using only two 5.25-inch optical drive bays. The 100% tool-less and tray-less design means drive installation and removal happens by hand in seconds, not minutes, saving valuable time whether you're a home user, computer forensic specialist, computer repair technician, HDD duplicator or a media workstation editor. A strong full-metal body ensures a long product life, better heat dissipation and keeps your sensitive drives protected at all time. To prevent overheating damage in active environments, the large user-adjustable cooling fan works together with the well-ventilated metal chassis to provide ample cooling performance.