I bought this card for a Dell Optiplex 3010 running PFSense. Works great.

Dual-Port PCIe Gigabit Network Card 1000M PCI Express Ethernet Adapter with Intel 82576 Two Ports LAN NIC Card for Support PXE for Windows/Windows Server/Linux/Freebsd /DOS with Low Profile https://www.amazon.com/dp/B09D3JL14S/ref=cm_sw_r_apan_glt_i_Z27A8F6FYFMQKXFSBFES