StarTech.com PCI Express Gigabit Ethernet Fiber Network Card w/ Open SFP - PCIe SFP Network Card Adapter NIC - Newegg.com
ASUS XG-C100F: Network card, PCI Express, 10 Gigabit Ethernet, 1x SFP at reichelt elektronik
Amazon.com: 10Gb PCI-E NIC Network Card, Single SFP+ Port, with Intel 82599EN Controller, PCI Express Ethernet LAN Adapter Support Windows Server/Linux/VMware, Compare to Intel X520-DA1(Intel E10G42BTDA) : Electronics