Trendnet'S Usb 3.0 To Gigabit Adapter + Usb Hub, Model Tu3-Etgh3, Adds A Gigabit Ethernet Port And Three 5 Gbps Superspeed Usb 3.0 Ports To A Windows Or Mac Computer. The Tu3- Etgh3 Is Also Compatible With Usb 2.0 And 1.1 Ports. An Included Optional Power Adapter Provides Full Power To Power Hungry Usb Devices.