The only thing computer hardware is good for is testing software.
When all else has been tried, it is a bad cable.
Years ago, when out to dinner with a bunch of musicians (I am not one) and the conductor from the community orchestra. Said conductor demonstrates the usual hesitance for ordering desert after a big dinner. I say "a good conductor has low resistance". Reaction: blank stares from 11 pairs of eyes. I'll shut up now.