Sonnet Technologies (www.sonnettech.com) has announced five new Mobile Rack Device Mounting Kits for the Echo Express III-R, a 2U rackmount Thunderbolt 2-to-PCI Express (PCIe) expansion system, and for the recently announced xMac Pro Server Thunderbolt 2-to-PCIe expansion system and 4U rackmount enclosure for new Mac Pro computers.

These expansion systems were designed to accommodate additional equipment within their enclosures, and the Mobile Rack Device Mounting Kits take advantage of that feature by offering users a way to add two 5.25-inch mobile rack devices to their equipment rack without taking up any more space. 

The Mac Pro Migration Edition (part number MR-MPM-X3HD) has a suggested retail price of $699. The Data Archiving Edition (part number MR-LTO-X4SSD) has a suggested retail price of $899. All five new kits are available immediately.