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USB-C Power Cable Checker
Find the charging ceiling from device, charger, and cable watt ratings. Power only — not USB data or video.
Result
Charging ceiling: 60 W (lowest known rating)
Charger: yes · Cable: no
Above about 60 W, a 5 A e-marked cable is typically required for USB PD. A watt rating alone does not prove every PD profile.
Actual charging power is negotiated by the devices. Connector shape does not guarantee USB data or video capability.
How this was calculated
- effective_max_power = min of the known watt ratings.
- Charger is sufficient when charger watts ≥ device watts. Cable is sufficient when it can carry that negotiated ceiling.
- Above ~60 W a 5 A e-marked cable is typically required. Above 100 W, USB PD EPR is a separate requirement.
Limitations
- Actual charging power is negotiated by the devices.
- A wattage rating does not guarantee every USB PD profile.
- Connector shape does not guarantee USB data or video capability.
Related glossary
USB PD
USB Power Delivery (USB PD) is a charging protocol that lets compatible devices, chargers, and cables negotiate suitable power levels over USB.
Learn moree-marker
An e-marker is an electronic chip in some USB-C cables that stores information about the cable’s supported capabilities. Its presence helps compatible devices identify the cable.
Learn moreBrowse cables