Fangrui Product Details 1. Support Existing Cat-5 Utp With Automatic Crossover Detection 2. Fully Compliant With Pci-express Base Specification Revision 1.1 3. Single- (x1) Pci-express With Throughput Up To 2.5gbps 4. Compatible With Pci-e Mini Card Electromechanical Specification Revision 1.2 5. Compatible With Half Size Mini Card Type Form Factor Fully Plug And Play Compatible A High Performance 1000base-t Ethernet Controller Card Backwards Compatible To 10/100base-t Networking 10/100/1000mbps Data Rate Auto Negotiation Operatio Compatible To Existing Cat-5 Utp Fully Compliant With Ieee 802.3, 802.3u, 802. Supports Full Duplex Flow Control (ieee 802.3x) Supports Ieee 802.1p Layer 2 Priority Encoding Supports Ieee 802.1q Vlan Tagging Supports Jumbo Frame To 9k Bytes Crossover Detection And Auto Correction Operation Realtek 8111 Chips. System Requirements: Me, 98se, 2000, Xp, Vista, 7, 8, 8.1, 10 32-/64-bit Server 2003, 2008 And 2012 32-/64-bit Linux, For Dos Macos X 10.4.x Or Above Colour:as Shown Material:pcb+plastic+meta