USB-C was supposed to make things easy. But standardizing the connector didn't solve the problem of what the hardware was good for, not least the cables. And now they all look the same, making a game of cable drawer roulette to find the one that will run enough power and data. Enter WhatCable , a simple MacOS app that tell you what any given cable is good for and what you plugged it into is doing with it. USB-C hides a lot under one connector. Anything from a USB 2.0 charge-only cable to a 240W / 40 Gbps Thunderbolt 4 cable, all looking identical in your drawer. macOS already exposes the relevant info via IOKit; WhatCable surfaces it as a friendly menu bar popover. A possible problem seems to be that cables lie about what they can do. WhatCable has a "report" button so you can snitch on vendors and products that so mislead the user. WhatCable trusts the e-marker. The cable speed, current rating, and vendor are read straight from the chip in the cable's plug.…