U-810 USB 3.0 Hub with Gigabit Ethernet Gain 3 Additional USB 3.0 Ports plus 1 Gigabit Ethernet port Up to 5Gbps data transfer rate and a Built-in DC jack power connector for receiving extra power from power adapter Increase network transfer speeds up to 10x over 10/100 Windows XP/Vista/7/8 (32/64 bit); Mac OS X 10.6/10.7/10.8 30 Day Money-back Guaranteed