Product Codes: 4-Port PCI-E Gigabit Ethernet Network Card Bus type: PCI-E X1 Compatible with: PCI-E 4x, PCI-E 8x, PCI-E 16x Connectors: Four RJ-45 Copper Wiring: Category-5, unshielded twisted pair (UTP) Bus Standard: PCI 2.1 (5GT/s) Bus Speed and Width: 4-PCI, operable in x4, x8, and x16 slots Data Rate Supported per Port: 10, 100, and 1,000 Mbps IEEE Standards: 10BASE-T, 100BASE-TX, 1000BASE-T Network Type: Gigabit Ethernet Intended Use: Server applications LED Indicators: 8 total (1 per port for link and speed), solid and blinking Includes full-height and low-profile screw-on brackets Operating System Compatibility: Windows Server 2012, Windows Server 2008, Windows 8, Windows 7, Windows Vista, Windows XP Professional, Linux (Stable Kernel versions 3.x, 2.6.x), Red Hat Enterprise Linux 5 and 6, SUSE Linux Enterprise Server 10 and 11, FreeBSD 9, ESX/ESXi Color: Green Material: PC + Metal Package Contents: 1 x Ethernet card 1 x Bracket Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display settings may cause slight color variations between the product image and the actual item. Measurement error allowed is +/- 1-3 cm.