1Gbs Single Open SFP Port PCIe 2.0 x1 Network Interface Card w/1000Base-SX SFP Transceiver | Your Fiber Optic Solution | Proline
Amazon.com: Gigabit Ethernet PCI Express PCI-E Network Card 10/100/1000Mbps SFP LAN Adapter Converter, PCI Express LAN Adapter Support Windows Server/Windows, Linux : Electronics
StarTech.com PCI Express Gigabit Ethernet Fiber Network Card w/ Open SFP - PCIe SFP Network Card Adapter NIC - Connect a PCI Express-based desktop or rackmount PC directly to a fiber optic