{begin pedantry} I'll butt in and say, yes twinax is serial, but no
not in a RS232 serial terminal way. Twinax (twin-axial) only
Exactly my (pedantic) point. Not all serial interfaces are RS232, not all
are asynchronous.
[Just about the only bit of the 'USB' name that's right is 'serial'. I
get very confused when soembody asks for a USB to serial converter...]
-tony