Supports Gigabit speeds over existing network cable \n• PCI Express 1.0a bus interface fits 1, 4, 8 and 16X PCI-E slots \n• Single PCI Express lane (x1) 2.5 Gbps interface \n• Full duplex flow control (IEEE 802.3x) \n• Supports jumbo frames up to 9 kB \n• Full duplex speeds (20 Mbps, 200 Mbps, 2000 Mbps) \n• Includes low profile 8 cm bracket \n• Wake-On-LAN (WOL) support \n• Supports the most popular operating systems: Windows XP, Vista and Windows 7