I previously owned a raspberry pi model 3b+ and have purchased a new raspberry pi 4b (4 gigabyte ram). I have an official micro USB power supply and some micro USB to USB type C converters designed to allow you to use old charging cables/accessories with modern smartphones.

I would like to know whether I can use the old power supply with the new board using these adapters?

I also won't be able to test this as it hasn't arrived in the post yet.


1 Answer 1


I have used a micro USB to USB C adapter to power my Pi4B. I used a 2 amp 5V wall-wart to provide the power. Please be aware that I only use my Pi's headless so my current requirements may be less than yours.

enter image description here enter image description here

I am currently powering the Pi4B via the 5V and ground pins on the expansion header (using a 5V UBEC powered from a 12V laptop PSU).

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.