ASUS XG-C100C V2 10GBase-T PCI-E Network Adapter, 10/5/2.5/1Gbps, 100Mbps, RJ45 Port, Built in QOS 10GBase-T PCIe Network Adapter with backward compatibility of 5/2.5/1G and 100Mbps ; RJ45 port and built-in QoS Hyper-fast 10Gbps Networking – Enjoy up to 10X-faster data-transfer speeds for bandwidth-demanding tasks. Complete Compatibility – XG-C100C is compatible with current network standards, including 10/5/2.5/1Gbps and 100Mbps, for seamless backward compatibility. Windows and Linux Support- flexible OS integration with Windows 10/8.1/8 and Linux Kernel 4.4/4.2/3.6/3.2. RJ45 Port for Easy Migration – Easily upgrade to 10Gbps networking using standard copper network cables. Prioritize Your Games – Built-in Quality-of-Service (QoS) technology lets you prioritize bandwidth and supported gaming packets for a smooth gaming experience.