Since Intel recommends Digikey as the purchasing source for the cable connector parts, it would be logical to get the RS-485\RS-422 from Digikey too.
I will rephrase a bit. I know RS-485\RS-422 transceiver can be bought. I saw a bunch of small boards with the RO/RE_/DE/DI/vcc/gcc pins and ethernet plug. Those have to be ordered from china with more than a month for shipping.
I would like to know if some people already tried such boards and if they can recommend some with US/Canada resellers to avoid having to buy everything separately and the hassle of dealing with sdm.