This Gigabit Ethernet PCI Express card is a high performance 10/100/1000 Base-T Ethernet LAN controller. It is perfect for home or office use. The card provides a low cost solution for connecting to a high speed Local Area Network with a data transfer rate up to 1000Mbps over a group of 4 twisted pair copper wires to a distance of 100 meters.Compliant with PCIe Revision 1.1PCIe x1 Lane with 2.5Gbs full duplex channelBackwards compatible to 10/100 BaseT networking10/100/1000Mbps data rate auto negotiation operationFully compliant with IEEE 802.3, 802.3u, 802.3abSupports full duplex controlSupports IEEE 802.1P Layer 2 Priority EncodingSupports IEEE 802.1Q VLAN taggingCrossover Detection and Auto Correction operationDual Realtek RTL8111F chipsetsCompatible with VMWare