Not an expert here. Just start to learn about 10G networking recently. I believe it is the SFP+ copper module which decide NBase-T support.
@Mach3.2, please correct me if I am wrong and the SFP+ switch chipset also matters.
I have only seen 2.5G and 10G copper or Optic modules, no 5G modules. So far I have only bought 10Gbe SFP+ modules (optic and copper) and I have no intention to buy the 2.5 modules. I have also two 1G optic modules as well for testing purposes.
So back to the original question, maybe it is not a good idea to get the IOcrest 5Gbe network adapter as there will be concerns of compatibility.
IOcrest has 10G NICs but for sure not the cheapest.