IBM Intel X540-T2 Dual Port RJ-45 10GBase-T PCIe Network Adapter 49Y7972 00JY856
Amazon.com: 10Gb PCI-E NIC Network Card for Intel X550-T2, 1GbE/2.5GbE/5GbE/10GbE Copper Dual RJ45 Port, with Intel ELX550AT2 Controller, 10G PCI Express LAN Adapter Support Windows Server/Linux/ESX : Electronics
X540-10G-T2-X8
Lenovo Part Number: 49Y7970 – For System x – Intel X540-T2 Dual Port 10GBaseT Adapter | Vertical Enterprise Equipment