Multiple outlets report on a new free Mac application called WhatCable that helps users identify the capabilities of their USB‑C cables. The app addresses a common USB‑C problem: many cables look the same externally but can support different features, such as higher data speeds or stronger power delivery, while others provide less performance than expected or have little to no labeling. The Verge notes the app as an accessible alternative to previously available, low-cost cable testers that indicated whether a cable is likely to be fast or weak, after at least one such product was discontinued. PetaPixel similarly describes cable confusion caused by unlabeled or misleading markings and says WhatCable is straightforward to use. 9to5Mac adds context that this issue has existed for years and references earlier efforts in other ecosystems, such as Google’s approach in Chrome OS, while stating that WhatCable provides similar testing functionality on macOS. Overall, the sources agree that WhatCable uses a Mac (including Apple Silicon Macs, per The Verge) to evaluate connected USB‑C cables and present what each cable can realistically support.