Get the Dell Intel X540-T2 Dual-Port 10GBase-T PCI-E Low-Profile NIC 3DFV8. It is the latest innovation to drive 10 Gigabit Ethernet into the server market.
Dell Intel X540-T2 Dual Port RJ-45 10GB NIC PCIe x8 Network Card K7H46 - Walmart.com
49Y7993 IBM X540 Dual Port 10GBase-T Embedded Adapter by Intel for System x
New Intel X540-T2 Dual 10GB RJ45 Ethernet PCI-E with Full half height brackets
Amazon.com: 10Gb PCI-E Network Card NIC Compatible for Intel X540-T2, Dual RJ45 Copper Port, with Intel X540-BT2 Controller, PCI-E X8, 10G PCI Express LAN Adapter Support Windows Server/Windows/Linux/Vmware/ESX : Electronics