Intel X520-DA1OCP Ethernet Server Adapter X520-DA1 for Open Compute Project NEW | eBay
X520-DA1 10G SFP+ PCIe 2.0 X8 Single Port Intel 82599EN chipset Network Adapter
Amazon.com: 10Gb NIC PCI-E Network Card for Intel X520-DA1(Intel E10G42BTDA), with Intel 82599EN Controller, Single SFP+ Port, 10G PCI Express Ethernet LAN Adapter Support Windows Server/Linux/VMware : Electronics