Product Codes: 4-Port PCI-E Gigabit Ethernet Network Card Bus type: PCI-Express X1 Compatible: PCI-E 4x, PCI-E 8x, PCI-E16x Connectors: Four RJ-45 Copper Wiring: Category-5, unshielded twisted pair (UTP) Bus Type: PCI Express 2.1 (5GT/s) Bus Speed (MHz).Width: 4- PCI Express, operable in x4, x8 and x16 slots. Data Rate(s) Supported per Port: 10, 100 and 1,000-Mbps IEEE Standard/Network Topology: 10BASE-T, 100BASE-TX, 1000BASE-T Applicable network type: Gigabit Ethernet Applicable fields: Server : 8 (1/port, link and speed) solid and blinking Full-height and low-profile, screw-on brackets included with each adapter Operating Systems: Windows Server 2012 R2*, Windows Server 2012*, Windows 8*, Windows Server 2008 R2*, Windows 7*, Windows Server 2008*, Windows Vista*, Windows Server 2003 R2*, Windows Server 2003*, Windows XP Professional, Linux* Stable version 3.x, 2.6,x, Enterprise Linux* 5, 6, SUSE Linux Enterprise Server* 10, 11, FreeBSD 9*, ESX/ESXi. Colour:green Material:PC+Metal Package Contents: 5 * ethernet card 5 * Bracket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.