Amazon.com: Gigabit PCIe NIC with Intel 82574L Chip, 1Gb Network Card Compare to Intel EXPI9301CT/ EXPI9301CTBLK NIC, Single RJ45 Port, PCI Express X1, Ethernet Card for Windows/Windows Server/Linux : Electronics
StarTech.com 1 Port PCIe Gigabit PCIe Network Card - NIC Adapter - ST1000SPEX2 - Ethernet Adapters - CDW.com
Amazon.com: Dual-Port PCIe Gigabit Network Card 1000M PCI Express Ethernet Adapter with Intel 82575/82576 Two Ports LAN NIC Card for Support PXE for Windows/Windows Server/Linux/Freebsd/DOS with Low Profile : Electronics
2.5 Gigabit Ethernet PCI Express PCI-E Network Controller Card 10/100/1000/25000 Mbps RJ45 LAN Adapter Converter for Desktop PC Network Interface Cards - Newegg.com
StarTech.com 4 Port PCIe Network Card - Standard Profile NIC - RJ45 Port - ST1000SPEX43 - Ethernet Adapters - CDW.com