Amazon.com: Dual-Port PCIe X4 Gigabit Network Card 1000M PCI Express Ethernet Adapter with Intel 82576 Two Ports LAN NIC Card for Support PXE SR-IOV for Windows/Windows Server/Linux/Freebsd/DOS with Low Profile : Electronics
TP-LINK Gigabit PCI Express Network Adapter - Micro Center
Amazon.com: StarTech.com 1 Port PCIe Network Card - Low Profile - RJ45 Port - Realtek RTL8111H Chipset - Ethernet Network Card - NIC Server Adapter Network Card (ST1000SPEX2L) : Electronics
Amazon.com: TRENDnet 2.5GBase-T PCIe Network Adapter, TEG-25GECTX, Converts a PCIe 2.0 or Later Slot into a 2.5G Ethernet Port, 802.1Q VLAN Tagging, Standard & Low-Profile Brackets Included, Windows Support : Electronics