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