The HSB2535SATBK Removable 2-drive backplane lets you quickly install & hot-swap drives from the front of your computer, by turning a 5.25" bay into a hot-swappable SATA/SAS interface for you to connect a 3.5” SATA hard drive (HDD) and/or a 2.5” SATA hard drive or solid state drive (SSD). The hard drive bay interfaces with SATA/SAS, offering two trayless hard drive bays & can be mounted into any 5.25" front bay, to provide a hot-swappable mobile rack. The bays feature ejection levers which allow drives to be installed & removed quickly from the computer system, providing a convenient way to create backups that can then be removed for safekeeping, archiving, or external portable access. For added versatility the backplane provides support for both SATA & SAS interfaces, an ideal accommodation for enterprise system integration. Plus, to help prevent drive failure, the bay provides excellent heat dissipation with a built-in fan & slotted aluminum enclosure. The HSB2535SATBK is backed by a Star Tech.com 2-year warranty & free lifetime technical support. The Star Tech.com Advantage Maximize storage space, with two hard drives in a single 5.25" bay Wide compatibility for system integration with support for SATA & SAS drive interfaces Optimum drive operating temperatures, with built-in cooling fan