Electronics
USB-C Cables: Why Your Cable May Be Slowing Your Charger
Not all USB-C cables are equal. How to pick the right cable for fast charging and data.
· 3 min read
Key takeaways
- Cables rated 60W are common; laptops may need 100W or 240W.
- E-marker chips identify high-power cables.
- Data speed and charging power are separate ratings.
Power ratings
A basic USB-C cable carries up to 60W. For laptops above that you need an e-marked cable rated for 100W or 240W.
Data speeds
Many charging cables only support USB 2.0 data. For fast external drives, look for USB 3.2 or USB4 labels.
Match your charger
A powerful GaN charger can only deliver full power through a capable cable.
Pro tip: Label your high-power cables so they do not get mixed up with phone cables.
Frequently asked questions
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