“I was having power issues with my Raspberry Pi 4b when I had an SSD, a Samsung Bar USB Flash Drive, and a Rii Wireless keyboard attached at the same time. The issue presented itself through the keyboard becoming very unreliable when the drives were attached.
This higher power PSU appears to have fixed the problem. Would recommend.”
“Very good power supplies. My pi 4 was running several peripherals and had low voltage warnings on a regular basis. No issues with low voltage warnings on my pi 4 since I switched to this from the official raspberry pi supply.”