Data Rate10/100/1000 Mbps, Dual RJ45 Copper Ports, up to 100m with Cat5/CAT5e for meeting the demands of data center environments. ^^ Wide compatibilityCompatible with Windows Server 2003/ 2008/ 2012, Windows7/8/10/Visa/XP, Linux, VMware ESX. (Does not support VMware ESXi 7.0 or above, Please see the following comparison table) ^^ Intel Original ChipIntel 82576EB chip with reliable performance, low latency. ^^ Selection of bracketWith profile bracket and additional low profile bracket that makes it easy to install the card in a small form factor/low profile computer case/server. ^^ After Sales ServiceREDLUX provide 30 Days Free-returned, 3 Year Free Warranty and Lifetime Technology Support.