- Adds a Gigabit Ethernet port to your computer - SuperSpeed USB 3.0 port supports Full Duplex 2 Gbps speeds - Compact energy efficient design - Windows and Mac compatible - Up to 70% energy saving GREENnet technology - Compatible with older USB 2.0 and 1.1 ports TRENDnet’s compact USB 3.0 to Gigabit Ethernet Adapter, model TU3-ETG, quickly adds a Gigabit Ethernet port to a Windows or Mac computer. A SuperSpeed USB 3.0 port supports Full Duplex 2 Gbps transfer speeds. The TU3-ETG is compatible with older USB 2.0 and 1.1 ports.