WhatCable Reports on USB-C Cable Power and Speed

[nello]

@leipziger1492

Just reading the newsletter today and realized that I’d installed WhatCable about a month ago after John Gruber (I think it was John, or else Michael Tsai) mentioned on their blog.

Perhaps you installed WhatCable after reading my July post:

Cable Testing

Does anyone recommend software that tests USB and Thunderbolt cables? Is any software a good substitute for a hardware cable tester? Has anyone used WhatCable? @glennf UPDATE Tuesday, August 25, 2026 2:18 AM (UTC) For a review of WhatCable, see: