HP X520-DA2 560SFP+ 10Gb 2-port High Profile Ethernet Server Adapter 669279-001 - anyITparts
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Amazon.com: 10Gb PCI-E Network Card NIC Compatible for Intel X520-DA2(Intel E10G42BTDA), Dual SFP+ Port, with Intel 82599EN Controller, 10G PCI Express LAN Adapter Support Windows Server/Windows, Linux, Vmware : Electronics