HP Intel X540 10Gb Ethernet Dual Port Adapter K4T75AA B&H Photo
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.
Amazon.com: HP Intel X540-T2 10GbE Dual Port Adapter : Electronics
PCI Express x8 Dual Copper Port 10 Gigabit Server Adapter (Intel X540 Based)