Dell Intel X550-T2 Dual / 2 Port 10Gbase-T RJ45 PCIe NIC Full-Height FH 4V7G2

StarTech ST10GPEXNDPI Dual Port Network Card - PCIe 10G / NBASE-T - 5 Speed NIC

StarTech ST20000SPEXI 2-Port PCIe 10GBase-T Intel X540 Network Card

$150 Sealed Dell Qlogic QL41164HFRJ Quad Port 10GbE RJ-45 10GBase-T Card D1

Supermicro 10GbE RJ45 Quad Port PCIe x8 NIC XL710-T4 X557-T4 Ethernet Card

Intel X540-T2 10Gb 10Gbe 10 Gigabit Network Adapter NIC Dual Port RJ45 10GBase-T

StarTech 2 Port PCI Express Gigabit POE Lan Card RJ-45 ST2000PEXPSE

StarTech ST4000SPEXI Quad Port Gigabit PCIe Network Card Low-Profile