What's Difference Between 5A Cable and 3A Cable (PD Protocol)

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Introduction
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From 5W to 240W, we find the charging speed of electronic devices is faster and faster.
But it's not easy for us to get the proper cable.
Even though the appearance looks similar, the performance is completely different.
For example, the charging cable can be divided into 5A (100W) and 3A (60W).
So, today, we gonna talk about what's the difference between them.

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