PCIe x1 1000Base-FX Dual SFP Port Fiber 1G NIC Card (Intel I350 Based)
10G Dual Ethernet Ports Pcie x4 X8 x16 Network Card Network Server Adapter for sale – Server & Workstation Network Adapter manufacturer from china (108949882).
PCI Express - Wikipedia
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