Cableproof field notes
Understand the label before you buy.
Short, source-backed guides to the four cable capabilities that matter: Power, Data, Video and Reach.
USB-C cable guide
The five-minute overview of power, data, video, length and extensions.
Power versus dataA 240 W USB-C cable can still be slow.
Learn why USB-C charging power and data speed are separate, what 240 W means, and how to read a cable specification before buying.
Displays and docksUSB-C video is a chain, not a cable badge.
Choose a USB-C cable for a monitor by checking the source, cable, dock and display path instead of relying on the connector alone.
Two to five metresA longer USB-C cable is a different engineering problem.
Understand practical USB-C cable length limits, when passive copper stops being simple, and what active or optical cables change.