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johnm0 19/01/2019

If powering by USB, the +5V is sourced from the USB and +5 is regulated to 3.3V output. BUT, the Barrel connector is directly connected to +5V output and this value regulated to 3.3V output. So, if connecting, for example, +12V to barrel connector, then +5V output will actually be +12V. Also, barrel connector is connected directly to USB so don't plug in USB at same time as barrel.

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Banggood Dear johnm0, Thank you for placing an order on Banggood and we hope you will enjoy the products you bought. If you have any further questions or suggestions, please do not hesitate to contact us at below links: Personal Computer: http://www.banggood.com/Contact-Us_hi111 Mobile: https://m.banggood.com/contact_us.html Best regards, Banggood Team
17/05/2024

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