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https://www.arduino.cc/en/uploads/Main/Arduino_Nano-Rev3.2-SCH.pdf
Arduino Nano has a diode between USB and 5V
About SS1P3L
https://www.vishay.com/docs/88915/ss1p3l.pdf
Maximum average forward rectified current is 1.0A
If you use the Arduino Nano with heavy load, the diode must be burnt
I sometimes get rid of the diode and short like this image. but you must be using extra power(like a phone charger)
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