10G PCI-E NIC network card single SFP + port PCI Express X520-DA1 | eBay
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
Startech .com PCI Express 10 Gigabit Ethernet Fiber Network Card w/ Open SFP +PCIe x4 10Gb NIC SFP+ AdapterScale your network performanc... PEX10000SFP - Corporate Armor