Features: brand new and high quality Compliant with PCI-Express Base Specification 2.0 (5GTs) and backward fit for 1.1 and 1.0A;Specifications ;PCI-Power Management Specification 1.2 Support 10/100/1000 auto-configuration; support for swap/skew correction, crossover detection and auto-correction. Support Wake-on-LAN and Remote Wake-up; Support EMAC-393 ECMA- host sleep standardSupport full-duplex flow control (IEEE-802.3X); support 9K bytes frame. Fully Compliant with IEEE-802.3, IEEE-802.3u, IEEE-802.3ab; Support IEEE-802.p-Layer 2 Priority Encoding (Prioritization); Support IEEE-802.Q VLAN Tagging (Virtual Local Area Network); Support IEEE-802.3az-200. Support two -lane 2.5Gbps PCI-Express Support hardware error correction code functionSupported operating systems: forWinME,98SE, 2000, XP, WIN7,WIN8,WIN0 32-/64-bit; 2003, 2008 and 202 32-/64-bit. Specifications: Material:Metal Chipset: RTL8111H Bus width: 2.5Gbps PCI-Express X1 Connectors: 4x RJ45 Data rate 10/100/1000M Size:Approx..1x5.2cm/4.76x2.05inches Package Includes: 1x Network Card note: Please allow 0-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.