https://www.easyshoppi.com/product/asus-xg-c100c-10gbase-t-pcie-network-adapter-with-backward-compatibility-of-5-2-5-1g-and-100mbps-rj45-port-and-built-in-qos/
ASUS XG-C100C 10GBase-T PCIe Network Adapter with Backward Compatibility of 5/2.5/1G and 100Mbps ; RJ45 Port and Built-in QoS