Bus Type: PCI Express 1.1 (2.5 GT/s) With Low Profile Compatible with PCI-E 1X,4X,8X,16X slot Support Windows 2003 Server/vista/Virtual Server 2005,Red Hat Enterprise Linux*4 or Later,Professional 9.2 or Later,FreeBSD 5.X or Later Support PEX To serve our customers with wider range of products, we are committed to offering various types of excellent quality fiber-optic products to fulfill different demands of the industry. If you are interested in products which are not shown in our online catalog, please let us know! Product Type: Gigabit Ethernet Card Network Technology: 10/100/1000Base-T Host Interface: PCI Express Interfaces/Ports: 1 x RJ-45 Features: Intel 82574L Gigabit Ethernet Controller: High performance and reliability; low power Data Rate Supported per Port: 10, 100 & 1,000 Mbps Bus Width: x1 lane PCI Express operable in x1, x4, x8, x16 slots Bus Speed (x1, encoded rate): 2.5 Gbps uni-directional; 5 Gbps bi-directional Connectors: RJ-45 Interrupt Levels: INTA, MSI, MSI-X IEEE Support: 802.3z Typical Power Consumption: 1.9W LED Indicators: LINK/ACTIVITY LED: off=NO LINK; on=LINK; blinking=ACTIVITY SPEED LED: off=10 Mb; green=100 Mb; yellow=1000 Mb Dimension(WxLxH): 2.181 x 4.696 x 4.725 inch / 5.53 x 11.92 x 12 cm Plug and play Colour:green Material:ABS Package Contents: 4 * Network Card 4 * Short Film 4 * CD