“This is an amazing device, it has changed my life in so many ways, no longer will I stare longingly at my Pi 4 hoping that it will magically turn on.
It's a power supply, it works.”
“Seems like a good quality unit and and works fine with my Raspberry Pi 4. It was reasonably priced and therefore it was not worth risking some of the dubious looking alternatives. I presume the extra 0.1V (on top of nominal 5V supply) is to give some headroom to allow for some voltage drop in the cable and connector. The Pi 4 seems to be quite fussy about supply voltage.”