Wireless Stick Lite V3 Power Sources

Hi there,

I am wondering what would happen if the Wireless Stick Lite V3 board would be powered with 5V USB wall adapter together with an additional 5V source on 5V pin? Is there any protection against overcurrent, malfunction? Or is it not critical for the board?

Thanks a lot, best regards

5V is acceptable, and the current should be controlled within 500mA as much as possible