Lenovo ThinkStation Intel X550-T2 Dual Port Copper 10Gb Ethernet Adapter - PCI Express 3.0 x4 - 1.25 GB/s Data Transfer Rate - Intel X550-T2 - 2 Port(s) - 2 - Twisted Pair - Low profile Low profile Low profile Bracket Height - 10GBase-T - Plug-in Card: