This is a general-purpose 2.5Gbps Ethernet PCI card. Users can switch to a standard RJ45 network port through the PCIE x1, x4, x8 or x16 slot of the computer. It is mainly aimed at improving the speed of users in gaming games. designed . Driver Download: https://.realtek./-/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-pci--software Integrated 10M BASE-T and 100/1000M/2.5G BASE-T 802.3 compatible transceiver. Supports 2.5G Lite (1G data rate) mode. Auto-Negotiation with Extended Page capability (XNP). Compatible with NBASE-TTM PHY Specification. Supports PCI 2.1. Supports pair swap/polarity/skew correction. Crossover Detection & Auto-Correction. Supports 1- 2.5/5Gbps PCI Bus Supports hardware ECC (Error Correction Code) function Supports hardware (Cyclic Redundancy Check) function Transmit/Receive on-chip buffer support Supports PCI (Message Signaled Interrupt) and -X Supports power down/link down power saving/PHY disable mode Supports ECMA-393 ProxZzzy Standard for sleeping hosts Supports LTR (Latency Tolerance Reporting) Wake-On-LAN and 'RealWoW ' Technology (remote ) support Supports 32-set 128- Frame pattern exact matching Supports WPI (Wake Packet Indication) Supports PCIe L1 substate L1.1and L1.2 Compatible with IEEE 802.3, IEEE 802.3u, IEEE 802. Supports IEEE 1588v1, IEEE 1588v2, IEEE 802.1AS time synchronization Supports IEEE 802.1Qav credit-based shaper algorithm Supports IEEE 802.1P Layer 2 Priority Encoding Supports IEEE 802.1Q VLAN tagging Supports IEEE 802.1ad Double VLAN Supports IEEE 802.3az (Energy Efficient Ethernet) Supports IEEE 802.3bz (2.5GBase-T) Supports Full Duplex control (IEEE 802.3x) Supports jumbo frame to 16K bytes System Requirements Windows OS Linux, for OS and Material: PCB+Metal colour: black + silver Package Contents: 1 x PCI- to 10/100/1000M/2.5G Ethernet Card 1 x Low-profile bracket Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.