Features: 1.Comply with PCI-Express: Revision1, 1. 2.It adopts PCI-Express1-Lane (x1) interface interface and can be inserted in 2x, 4x, 8x16x slots. 3.RTL 8111F high performance Gigabit network control chip. 4.Backward compatible with 10/100 BASE-T Ethernet. 5.Automatically match 10M/100M/1000M data transmission mode. specification: 1. Comply with PCI-Express: Revision1.1. 2. It adopts PCI-Express1-Lane (x1) interface interface and can be inserted in 2x, 4x, 8x16x slots. 3. RTL 8111F high performance Gigabit network control chip. 4. Backward compatible with 10/100 BASE-T Ethernet. 5. Automatically match 10M/100M/1000M data transmission mode. 6. Compatible with existing CAT-5 network cabling. 7. Comply with EEE8023, 8023u, 8023ab standards. 8. Support full duplex network mode (EEE8023x). 9. Support IEE8021 P Layer2 Priority Encoding. 10. Support IEEE802, 1 Q VLAN tagging. 11. Support cross detection and automatic correction operations. 12. Plug and play. s: Master: RTL8111F Speed: 10/100/1000Mbps Interface: PCI-e System: For Windows8, Windows7/ista/XP/2000/ME/98sE/ Server2003-200832/64-bit Package List: 1 * Network Adapter 1 * Cover Board Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.