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General discussion • Re: Can the 27W power supply from a Rpi5 be used with a Rpi4??

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The Pi5 PSU does not work with the early revision 1.1 Pi4. It should work with revision 1.2 onwards though, the revision that has the USB-C PD fix. I believe the original Pi4 8GB was revision 1.4 so this should work fine with the Pi5 PSU.
Do you have a citation for that? I was under the impression that the USB-C issue of the rev 1.1 Pi4 only affected some power supplies (the Apple Mac one was the one predominantly reported). I don't believe the Pi5 supply is affected.
No citation, it was based on my experience with my Pi4 and Pi5 PSU at the beginning of last year where a Pi4 Rev1.1 didn't power on. I have just tried again with the same Pi4 and Pi5 combination and it now works. I can only apologies for spreading FUD, sorry.

Statistics: Posted by sparkyhall — Sun Jan 12, 2025 8:10 pm



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