Features: brand new and high quality Support existing CAT-5 UTP cabling with automatic crossover detection. Fully compliant with PCI-Express Base Specification Revision 1.1. Single-Lane (x1) PCI-Express with throughput up to 2.5Gbps. for PCI-E Mini Card Electromechanical specification revision 1.2. for Half size Mini card type form factor. Fully Plug and for 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 cabling. Fully compliant with IEEE 802.3, 802.3u, 802.3ab. 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. Specifications: Bus type: Mini PCI-E Port type: RJ-45 Transmission rate: 10/100/1000Mbps Applicable network type: Gigabit Ethernet System Requirements: for Windows ME, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10 32-/64-bit for Windows Server 2003, 2008 and 2012 32 -/64-bit Linux, DOS for Mac OS X 10.4.X or above Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1 x Mini PCI-E Gigabit Network Card 1 x Low Profile Bracket 1 x Driver CD