This Free App Lets You Test Your USB Cables (And Find Hidden Info On Them) (opens in new tab)

Covers darrylmorley/whatcable: macOS menu bar app that tells you, in plain English, what each USB-C cable plugged into your Mac can actually do

The open-source app WhatCable can offer a wealth of information about your USB cables, including charging diagnostics and warnings about "unusual" hardware.

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