[Super-fast 2.5Gbps Networking] High up to 2.5x-speed with Realtek RTL8125B chip, much faster data-transfer speeds for gaming, living broadcasts and downloads in bandwidth-demanding tasks.[Complete Compatibility] Seamless backward compatibility for 2.5Gbps/1Gbps/100Mbps, Support Windows10/8.1/7, and Linux, no dirver needed on Windows10, easily download the driver in Realtek official website for other OS.[PCIe to 2.5G RJ45] This 2.5GBASE-T PCIe Network Adater convers a PCIe slot(X1/X4/X8/16) into a 2.5G RJ45 Ethernet Port. Note: Only work with PCIe slot, not for PCI slot.[Widely Use with Heat Sink]Comes with standard bracket and low-profile-bracket to meet the needs of different cases such as desktop, workstation, server, mini tower computer and so on. Excellent heat dissipation can reduce the temperature quickly and maintain the stability of network transmission.Material: plasticcolour: blackPackage Contents:1 x PCI Express Network Adapter with heat sinkOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.