Sonnet"s Mobile Rack Device Mounting Kit enables you to install one full-height or two half-height 5.25" form factor mobile rack devices inside the Echo Express III-R or xMac Pro Server rackmount enclosure. You can install a variety of devices up to 8" in length inside the mobile rack kit - devices ranging from LTO tape drives to Blu-ray burners, and Sonnet"s Qio MR Thunderbolt pro universal media reader to shuttle drive enclosures for 3.5" hard drives or 2.5" SSDs are compatible - and connect them to cards installed inside the Echo or xMac Pro Server chassis to further expand your tools at hand. An integrated 100W power supply powers the devices, while a quiet 80 mm fan cools them. If you need to install only one half-height device, blank plates are included to allow you to cover the remaining space to keep a clean look. Installation of devices and the kit itself is easy. The Mobile Rack Device Mounting Kit includes mounting screws to secure your mobile rack devices within the kit"s frame. After securing the devices, attach one of the eight included power connectors to each device, connect interface cables to the devices and route them through the cable pass-through opening. Connect the interface cables to cards installed in the Echo or xMac Server Pro chassis, and then secure the entire mobile rack kit assembly inside the rackmount enclosure. The Mobile Rack Kit Pro Media Reader Edition includes the Mobile Rack Device Mounting Kit with Sonnet"s Qio MR (Thunderbolt Edition) pro media reader, four 2.5" 6Gb/s SATA hot-swap drive cages, four eSATA-to-internal SATA cables, an external 4-port 6Gb/s eSATA PCIe 2.0 card. Add four of your own 2.5" SSDs or hard drives to complete the package. ATTENTION: This unit has no retail packaging and ships in a cardboard box with branding stickers. Box may show re-taping, yet item remains NEW & UNUSED. Authorized Sonnet dealer.