PCI-Express 10/100/1000M Gigabit Lan Card connect faster than ever with this PCI Express Gigabit Ethernet Network controller card. Optimize your computers performance with a RJ-45 8111 Ethernet connection with data transfer rates of up to 1000Mbps. Chipset : Realtek 8111 Features: 1-Lane (x1) PCI-Express with transfer rate 2.5 Gb/s Full Duplex channel Compliant with PCI-Express Revision 1.0a PCI Express X1 interface, compatible with PCI Express X16, X8, X4, X1 slots 1000M Ethernet interface Compliant with IEEEE 802.3, 802.3 ab, 802.3 u and 802.3 x 802.1, VLAN technology Support 10/100/1000 Base-T networking with Auto-Negotiation Automatic crossover detection and correction Connection : 1 X RJ 45 Supports Server2003/XP/Vista/win 7, etc. Optional : Change to Low Profile Size Bracket at a cost up Package Contents: 1 X Product 1 X Manual (Note 1: Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time) Note 2: This card does not support diskless - MAC address is the same Note 3 : As for this model, it is mounted with normal size bracket as shown in the photo. If you need to change to Low Profile size bracket, just add a little cost up) We also carry higher end model : PCIe Dual Gigabit LAN Ethernet Controller Card