The S2510U33RUSM USM Removable Storage Bay & 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 & enclosure are compatible with Seagate Go Flex & other USM interface devices, & support SATA III transfer speeds up to 6.0 Gbps. USM (Universal Storage Module) is a portable drive standard that interfaces with SATA & enables you to hot-swap drives between multiple host devices, such as PCs, notebooks, DVRs & many others. Using the included USM to USB (Universal Serial Bus) 3.0 adapter, the enclosure can also be connected externally to non-USM host devices via USB (Universal Serial Bus). Plus, with support for UASP, the enclosure performs up to 70% faster than conventional USB (Universal Serial Bus) when paired with a UASP-enabled host controller, to utilize the full potential of your SATA III hard drives. See our UASP testing results below for further details. For even more versatility, Star Tech.com offers the SAT2510U33USM, an additional 2.5in USM SATA Hard Drive Enclosure, which offers the option to swap multiple drives in & out of the main computer as needed. The USM removable hard drive bay interfaces with SATA, & can be mounted into any 5.25" front bay, to provide a hot-swappable mobile rack. The bay features push-button ejection allowing drives to easily be installed & removed from the computer system, providing a convenient method of creating backups that can then be removed for safe keeping, archiving or external portable access.