ABC&reg; USB 3.0 10/100/1000Mbps Gigabit Ethernet RJ45 External Network Card LAN Adapter ABC is a registered trademark and the only authorized seller of abcsell branded products. USB3.0 interface;Backward compatibility with USB2.O Supports Auto MDIX (straight and cross network cable auto-detection) Supports USB full and high speed modes with bus power capability Supports both full-duplex and half-duplex operation in Fast Ethernet