Etekcity USB 2.0 to Gigabit Ethernet (10/100/1000Mbps) RJ45 LAN NIC Network Adapter for Windows, Mac, Chromebook, Linux, and Specific Android Tablets USB 2.0 male A to RJ45 female adapter supporting 10/100/1000 Ethernet at USB 2.0 speeds (480Mbs) with auto-sensing capability Supports Auto MDIX (straight and cross network cable auto-detection), 9KB Jumbo Packet, & Half/Full Duplex For adding a wired network interface to a wireless-only system, replace a bad port, for higher performance, or for peer-peer use Works with Windows XP/Vista/7/8 and Mac OSX; Overcurrent protection prevents damage to device or computer IEEE 802.3, 802.3u, and 802.3ab (10Base-T, 100Base-TX, and 1000Base-T) compatible