PCI 1000MT Single port Gigabit Server network card Intel 82540EM Chipset | eBay
Intel Network Adapter 10/100/1000Mbps PCI-Express 1 x RJ45 - Newegg.com
2-Port Gigabit PCIe SFP Network Card 1000M Dual Ports PCI Express Ethernet Adapter with Intel 82571EB LAN NIC Card for Support PXE for Windows/Windows Server/Linux with Low Profile : Electronics - Amazon.com