4XEM"s USB 2.0 to Gigabit Ethernet NIC Network Adapter (4XUSB2GIGNET) adds a single RJ45 Ethernet port to a USB-enabled computer system. Support for Gigabit network connections when used with a USB 2.0 host connection. This compact USB 2.0 network adapter is backward compatible with older USB 1.x computer systems (speed limited by USB bus). Problem it solves: No Ethernet port on board? No biggie. Use this high quality USB 2.0 adapter to connect to an Ethernet network for fast file sharing, printer access, broadband Internet hook up and more. 4XEM gear is respected industry wide for its high performance, premium quality and durability.