Specific calculators, planners, and explainers for jobs that usually get buried in forums.
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USB-C cable checker
Work out whether a cable is a good candidate for charging, storage, docks, or displays before you waste time debugging the wrong lead. Enter the cable markings you can see, pick the job you need it to do, and get an instant practical verdict in the browser.
Why this is useful
USB-C is one of those standards that looks universal right up until the cable becomes the bottleneck. Plenty of cables will charge but not carry fast data. Plenty will handle an SSD but not a high-power laptop. Plenty look identical while doing very different jobs.
This page translates the marks consumers actually see into an action: use this cable, avoid this cable, or keep looking because the markings are too vague to trust.
Useful for
- Deciding whether the cable in a drawer is worth trying before you blame the dock or drive
- Shopping for a replacement cable with a concrete minimum label instead of a vague marketing page
- Explaining why a phone-charging cable is often the wrong cable for fast storage, displays, or 140W charging
Source note
The checker is based on current USB-IF style cable markings: 60W or 240W power marks and 5, 10, 20, 40, or 80Gbps performance marks. USB Type-C 20Gbps cables are treated as suitable for 10Gbps jobs too, matching the USB-IF note for those cables.