I highly doubt that it is defective, Robin. Crossing them with a ethernet cable would certainly show if they
worked, but only if the settings are correct. You could first change the default back to the way it was
shipped and try the cable that way, since it was designed to be tested in that manner.
Otherwise, drop me a short mail at dj0qn (at) darc.de and I will send you my networking checklist that
may be able to help you figure out what you may have missed.
73,
Mitch DJ0QN / K7DX