Multiple outlets report on a free Mac application designed to help users diagnose slow USB-C charging. The app, referred to as “WhatCable,” uses information that macOS already collects when USB-C devices and accessories are connected. Instead of relying on manual guesses or third-party hardware testers, WhatCable analyzes connection details available in the operating system to estimate the cable’s charging performance. Specifically, the app is presented as a way to identify the wattage capabilities and connection speed associated with a given USB-C cable. This can help explain why some chargers charge more slowly than expected, even when users believe they are using an appropriate cable. The coverage emphasizes that the tool is intended for troubleshooting charging issues on macOS by surfacing the performance characteristics that are already measurable through the system. Overall, the reports describe the app as a free utility that can help users determine whether a cable’s technical specifications or negotiated performance limits are contributing to slower charging.