WhatCable Logo
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The WhatCable logo is a trademark of WhatCable and is used here for identification and editorial purposes only. Toolradar does not claim ownership.
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About WhatCable
WhatCable is a macOS application designed to diagnose and understand the real capabilities of your USB-C cables, ports, and connected devices. It helps users identify bottlenecks in charging speeds and data transfer rates, providing clear insights into whether the cable, charger, Mac port, or device is limiting performance. The free version offers essential information like cable e-marker data, active transport identification, and basic charging details. WhatCable Pro expands on this with deep diagnostics, including live power metering, detailed Power Delivery (PD) contract inspection, port health counters, and signal-level diagnostics directly from IOKit. It's ideal for engineers, power users, and anyone needing to troubleshoot USB-C connectivity issues on their Apple Silicon Mac.
See full WhatCable review on Toolradar