The classic serial null-modem cable was, among other things ... [Nick Sayer] needed just such a tool, but one that would work in a modern USB environment. Enter the isolated USB null-modem.

It’s also safer, as gadgets and chargers communicate with each other over the USB cable to confirm the optimal charging power level. This handshaking approach supports voltage steps at 5V ...

The following table covers most of the various versions you may come across when shopping for your next USB cable. We’ve also compared USB 3 vs USB 3.1 vs USB 3.2 in a dedicated article if you ...