“It's a power supply. It supplies power.
You could pay a lot less, but my time has value, and my pis on these don't randomly reboot when you attach USB devices or crash when you run something CPU heavy. As soon as a cheap power supply causes trouble, time worth more than the £3 saved is wasted.”
“I bought this to replace a generic power supply that was giving me voltage warnings on my Raspberry Pi 4. Those warnings have gone since I switched so very happy with my purchase. Great price and fast delivery too”