StarTech.com 1 Port PCI 10/100/1000 32 Bit Gigabit Ethernet Network Adapter Card (ST1000BT32)
Amazon.com: 2.5GBase-T PCIe Network Adapter with 1 Port, 2500/1000/100Mbps PCI Express Gigabit Ethernet Card RJ45 LAN Controller Support Windows Server/Windows/Linux, Standard and Low-Profile Brackets Included : Electronics