@w0w said in pfSense 5Gb/s Ethernet NIC:
@Craash
X710-T2L or T4L should support directly with latest firmware, but really don't know about FreeBSD and some OEM versions like Dell, have seen some 10/1 Gbe versions only.
Late to the party with this reply but you can flash the Dell versions of the X710-T2L and T4L to Intel firmware without too much hassle. This will enable the missing 2.5Gbps and 5Gbps speeds.
https://forum.level1techs.com/t/crossflashing-intel-official-firmware-on-dell-lenovo-pcie-x710-da2-nics-solved/196357/7
Little bit of reading but it works great. I used Linux but the tools are available for FreeBSD too. I've done a T4L and a T2L and both worked as expected.