Intel RJ45 network card is 10/100/1000Mbps Gigabit Ethernet Server Network Card equipped with Intel I350 Gigabit Controller. Another product Gigabit Server Ethernet Network Card comes with Intel 82571EB Gigabit Controller. Both these Intel RJ45 network card products have RJ 45 copper cable interface. These network cards deliver data transmission speeds of 10/100/1000Mbps across media types - 100, 1000Mbps with 100 Meter UTP-5e, 10Mbps UTP-3e. Cozlink Intel RJ45 network card is compliant with Ethernet standards (10BASE-T, 100BASE-T, 1000BASE-T) and support IEEE802.3 approved ports. Compatible working environments of Intel RJ45 network card are Windows*Visa*SP1, Windows Server*2003 SP2, Windows*Unified Storage Solution 2003,Windows Server*2008,Linux*Stable Kernel Version 2.6, Linux*RHEL4, Linux*RHEL5, Linux*SLES9, Linux*SLES10, FreeBSD*7.0, UEFI*1.1 and VMware ESX*3.x.