Irctek USB 3.0 to RJ45 Gigabit Ethernet External Network Card LAN Adapter 10/100/1000Mbps Supports 10/100/1000 Mbps auto-sensing capability USB3.0 interface, backward compatibility with USB2.0 Supports Auto MDIX (straight and cross network cable auto-detection) Supports USB full and high speed modes with bus power capability IEEE 802.3, 802.3u, and 802.3ab (10Base-T, 100Base-TX, and 1000Base-T) compatible