“I bought the power supply because my present power supply is showing a low voltage report. I do not know what is causing the low voltage sign to appear, but I thought I had better be safe than sorry.
Perhaps I will try the old one on a Pi Zero?”
“Very good quality PSU, works far better on my old Pi 1 B's and Pi 2B(especially picky) than phone chargers and dodgy USB charger cables. Well worth getting.”