This quad port PCIe 10/100/1000 Mbps Gigabit Ethernet Network Adapter Card provides four Gigabit Ethernet ports and is fully compatible with IEEE 802.3/u/ab standards.Suitable for any PCI Express x4 enabled client, server or workstation, the Gigabit Ethernet Network Adapter Card supports high performance four channel networking and maximum data transfer speeds up to 1000Mbps in each direction (2000 Mbps total) - up to ten times faster than 10/100 Ethernet.Compatible with a broad range of operating systems, including Windows 2000, XP, Vista, 7, Server 2003, Server 2008 R2, WinCE (4.2/ 5.0) and Linux (Redhat Enterprise, SCO, FreeBSD, etc), this high quality PCIe Gigabit NIC is suitable for many SMB and Enterprise applications and is backed by a StarTech.com 2-year hardware warranty and free lifetime technical support.