The SDOCKU33HB USB (Universal Serial Bus) 3.0 hard drive dock with Fast Charge USB (Universal Serial Bus) hub lets you easily connect & swap 2.5in or 3.5in SATA III hard drives (HDD) and solid state drives (SSD) through an available USB (Universal Serial Bus) port. The enclosure supports UASP & delivers optimal performance with a USB (Universal Serial Bus) 3.0 connection, but is also backward compatible with USB (Universal Serial Bus) 2.0/1.1 host connections. The Hard Drive Dock features a built-in 3-port USB 3.0 Hub that enables you to connect up to 3 additional USB (Universal Serial Bus) 3.0 devices to your computer through the same USB (Universal Serial Bus) connection. One of the ports on the hub also has Fast Charging capabilities, that charges iPad’s & other mobile devices as effectively as through a wall plug. This Fast Charge Port has been specially designed for compatibility with a wide range of tablets & smartphones. Enhanced with UASP, the dock supports up to 70% faster performance than conventional USB (Universal Serial Bus) 3.0 when paired with a UASP-enabled host controller. Using a more efficient protocol than the traditional USB (Universal Serial Bus) BOT (Bulk-Only Transport), UASP reduces latency, significantly increasing transfer speeds to utilize the full potential of your SATA III hard drives. See our UASP testing results below for further details. With support for SATA I/II/III, large capacity drives (tested up to 4TB), & 2.5in or 3.5in hard drives this HDD/SSD docking station is compatible with virtually any SATA hard drive, & greatly increases the storage/backup capabilities of your computer. Plus, configurable power management reduces energy consumption, & extends the life of your drives by avoiding unnecessary access. Extend the value of this hard drive docking station further with the addition of our SATA to IDE Hard Drive Adapter (SAT2IDEADP), allowing easy insertion of any 2.5 or 3.5in. IDE hard drive into a SATA hard drive dock. To ensure compatibility with your computer system, the SDOCKU33HB supports all of the leading operating systems, including: Microsoft Windows (8/7/ Vista/XP/ Server 2008/ Server 2003), Apple OSX (10.9/10.8/10.7/10.6), Linux, & Google Chrome OS™. The SDOCKU33HB is backed by a 2-year Star Tech.com warranty & free lifetime technical support. enhanced Performance with UASP UASP is supported in Windows 8, Mac OSX (10.8 or above), & Linux. In testing UASP performs with a 70% faster read speed & 40% faster write speed over traditional USB (Universal Serial Bus) 3.0 at peak performance.