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What is USB 1A?
What is the difference between USB 1A and 2.1 A?
Is 5V 1A fast charging?
What is the 1A output?
Sep 2, 2013 · A 1A device means that, for a power supply at a certain voltage (5V for USB), the device will "ask" for 1A from the power supply.
$8 to $200
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