StarTech.com 5.25” USM Storage Bay with 2.5" SATA USM USB 3.0 HDD / SSD Enclosure - 525" USM Mobile Rack for External 2.5" USM Enclosures
Add a hot swap 5.25" USM bay to a PC, and connect your 2.5" SSD/HDD with the included enclosure - The S2510U33RUSM  USM Removable Storage Bay and Enclosure turns a 5.25" front computer bay into a hot-swappable USM interface for you to connect a 2.5" SATA hard drive (HDD) or solid state drive (SSD), using the included USM enclosure. Both the bay and enclosure are compatible with Seagate GoFlex and other USM interface devices, and support SATA III transfer speeds up to 6.0 Gbps. USM (Universal Storage Module) is a portable drive standard that interfaces with SATA and enables you to hot-swap drives between multiple host devices, such as PCs, notebooks, DVRs and many others. Using the included USM to USB 3.0 adapter, the enclosure can also be connected externally to non-USM host devices via USB. Plus, with support for UASP, the enclosure performs up to 70% faster than conventional USB when paired with a UASP-enabled host controller, to utilize the full potential of your SATA III hard drives. For even more versatility, StarTech.com offers the SAT2510U33USM, an additional 2.5in USM SATA Hard Drive Enclosure, which offers the option to swap multiple drives in and out of the main computer as needed.