Supports Gigabit speeds over existing network cable Does not require fiber optic cabling to run Gigabit speeds 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 7/8 Three-Year Warranty