SIIG"s USB 3.0 to Gigabit Ethernet Adapter Pro easily adds a Gigabit (1000Mbps) Ethernet port to your Mac system or PC to connect to Gigabit network via an USB 3.0 port. This USB 3.0 Ethernet adapter delivers 5Gbps USB 3.0 data transfer rate to allow for high speed, large files transferring. Its compact design and bus-powered ability without requiring a power adapter make this a convenient networking tool to greatly enhance your existing computer"s networking capability