USB Expander: Powered USB hub expands 1 USB port to 7 USB 3.0 ports and 4 charging ports for keyboard, mouse, printer, hard drive and more USB peripherals simultaneously. With a 12V/3A power adapter for stable connection SuperSpeed Transmission: Synchronizes data at speeds up to 5Gbps, 10 times faster than USB 2.0, HD photos, videos and large file transfer can be done in a flash. Backward compatible with USB 2.0/1.1