Tripp Lite's U336-000-GBW, USB3.0 Gigabit Ethernet Adapter, allows your computer to instantly connect to a Gigabit network through a USB3.0 port - no need to open up your computer case to add an internal Ethernet card. The adapter's compliance with USB 3.0 (5gbps) ensures true Gigabit network speed without any compromise. Furthermore, the adapter is compact and is USB bus-powered; requires no external power adapter.