Features: Brand new and high quality Automatic negotiation with extended next page capability Supports swap/sex/skew correction For Cross pair correction and auto correction Supports Hardware ECC (Error Correction Code), Hardware CRC (Cyclic Redundancy Check) function Supports PCI MSI (Message Signal Interrupt) and MSI-X; Supports ECMA-393 ProxZzzy standard for sleeping hosts Supports Wake on LAN and "RealWow!" technology (remote wake-up) Specifications: Applicable Network: Gigabit Ethernet Main Controller: RTL8125B Bus Type: PCIe x1 2.5Gbps/5.0Gbps, revision v2.1 Transmission Medium: 1 x 2.5G RJ45 port Transmission Rate: 2.5G/1000/100 Network Mode: support 2.5G and 1G Lite mode Network Topology: -Support IEEE1588v1, IEEE1588v2, IEEE80.2AS time synchronization Supports shaping algorithm based on IEEE802.1Qav credit Support IEEE802.1P layer 2 priority encoding Support IEEE802.1Q VLAN tag; IEEE802.3az-2010; IEEE802.3bz-2016 (NGBASET) Support full duplex flow control (IEEE802.3x) Transfer Rate: 100M/1G/2.5Gbps Size: about 129X68mm/5.08x2.68in Support Linux, Win 7/Win 8/Server 2008/Win 8.1/Server 2012/ Win 10 32/64bit; One available PCI for Express x1/x4/x8/x16 slot. Note: Due to lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement. Package Includes: 1 x PCIe RTL8125B 2.5G Single Electric Port Network Card 1 x CD Driver 1 x Low Profile Bracket