SIIG’s USB 2.0 Gigabit Ethernet is designed to quickly and easily add Gigabit Ethernet connectivity to your USB 2.0 enabled desktop or notebook computer. It supports 10/100/1000 Mbps auto-sensing capability, Auto MDIX (straight and cross network cable auto-detection), and both full-duplex and half-duplex operations in Fast Ethernet. This compact and portable USB 2.0 Gigabit Ethernet adapter is backward compatible with 10/100 Mbps Ethernet networks and is hot-pluggable and powered by the USB bus, no power adapter is needed. It is the perfect cost-effective solution enabling you to easily upgrade your desktop or notebook computer to Gigabit Ethernet network without going through the inconvenience of installing an internal network card. The USB 2.0 Gigabit Ethernet is IEEE 802.3, 802.3u, and 802.3ab compatible, USB specifications 1.0, 1.1 and 2.0 and RoHS compliant. It is also compatible with a wide variety of Windows operating systems and is backed by SIIG’s limited 5-year warranty.