Features: The RTL8125B 2.5GigabitEthernet card supports a transmission speed of 2.5Gbps, which is faster than traditional GigabitEthernet cards and can provide a faster networkconnection and data transmission experience. The networkcard is equipped with a high-performances RTL8125B chip, which has advancedNetwork processing capabilities, is stable and reliable, and can achieve high-speed data transmission. Auto-negotiation with extended next page functionality Support for swap/sex/skew correction, crossdetection and auto-correction Support hardwareECC (Error Correction Code), hardwareCRC (Cyclic Redundancy Check) function Supports ECMA393ProxZzzy standard for sleeping hosts, supportsWake-on-LAN and "RealWow!" technology Specifications: Compliant with PCIExpress Specification Revisionv2.1 Supports 1-Lane 2.5/5Gbps PCIExpress bus Onboard single 2.5G network port, integrated 10/100/1000M/2.5G transceiver Support 2.5G and 1G Lite, 100M mode Auto-negotiation with extended next page functionality Support for swap/sex/skew correction Cross detection and automatic correction Compatible with IEEE802.3, IEEE802.3u, IEEE802.3ab Support quad-core receive-side scaling (RSS) Transmission medium: 1 x 2.5G RJ45 port Transmission rate: 2.5G/1000/100Mbps Network Mode: Support 2.5G and 1G Lite mode Network topology: - Support IEEE1588v1, IEEE1588v2, IEEE80.2AS time synchronization System requirements: Win7/Win8/Server2008/Win8.1/Server2012/2016, Win10 32/64bit etc Support IEEE802.3az-2010 Package Includes: 1x RTL8125B Main Card 1x RJ45 NetworkTerminal 1x NetworkTermination Cable 1x CD 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