The Gigabit copper PCI Adapter GA311 is a powerful network card and is particularly useful for minimizing bottlenecks that occur at high network utilization. Data are transmitted at a rate of up to 1000 Mbit / s. In full-duplex mode, a data transfer rate up to 2000 Mbit / s is supported. With the Auto Uplink technology crossover cables are unnecessary. The Plug and Play technology guarantees a trouble-free installation and performance. Features 10/100/1000 Mbit / s auto-sensing port Half and full duplex 32-bit Auto Uplink Realtek chipset Support of 5-volt and 3.3-volt PCI bus standard Compatible with IEEE 802.3ab Gigabit Ethernet, IEEE 802.3u Fast Ethernet, IEEE 802U Auto-Negotiation LED displays Plug-and-play installation