Cabling is actually serious business; from an electrical standpoint, there is impedance matching, delay matching, cable shielding for EMI/C, etc. Then the conne

Cabling is actually serious business; from an electrical standpoint, there is impedance matching, delay matching, cable shielding for EMI/C, etc. Then the connector itself has a slew of mechanical requirements: mate/demate cycles, tolerances, thermal. Then it all needs to be made for a reasonable price - there are entire groups of engineers that band together to produce specifications so that things like Ethernet cables can exist and give the performance that people need, while being interoperable.