StarTech.com 1 Port 2.5Gbps 2.5GBASE-T PCIe Network Card x1 PCIe - Windows, MacOS & Linux - PCI Express LAN Card - RTL8125 (ST2GPEX) - 1 PT 2.5Gbps PCIe network card provides 2.5GbE network connectivity - Multi-Gigabit Ethernet connection: 2.5G/1G/100Mbps/10Mbps - Compatible w/ 2.5GBASE-T/NBASE-T specifications - Network speeds on CAT5e/6a cabling - IEEE 802.3az/IEEE802.3u compliant