Argon Micro USB Cable Power Supply 5.25 Volts 3 Amps for Raspberry Pi 3 and Zero Boards | UL Listed | 3.3 Feet Long Cable with Micro USB Connector | Micro USB Cable and Wall Charger

This thing is the best power supply for the Pi 4, hands down.

Converted a beat and busted Pac-Man Arcade1up into a RetroPie1up cab. Was getting undervolting errors time to time so I upped the amps with one of these and it worked perfect. No more undervolt!

Perfect for my needs. I have an overclocked raspberry pi 3 B+. This has retropie installed with a fan and custom power button installed. When running four controllers for mutiplayer games my old power adapter would have voltage problems which would cause problems with the pi, controllers, and games. This solved all issues I had. I will be using this power adapter in for all other projects in the future. Thank you!

This power supply has completely eliminated UnderVoltage issues on a Pi 3B+.

Charges, FAST. Works on Rpi4 and Asus Tinkerboard, havent had a shutdown yet in some high power applications.

No more lightnings in my raspberry pi.

Im running my 3B+ as a print server for my 3D printer and Ive gone from standard 2.4A to another brand that advertised 3A and I was always seeing the little lightning bolt in the top corner telling me that the Pi was not getting enough power. I rewired the external power switch with larger gauge wiring and still... power issues.

Works as described. Well made.

My OEM CanaKit power supply gave me undervolting warnings when using it with my Pi3 as an OctoPrint server for my 3D printer and while I had thought there was no way that an OEM power supply could be delivering inconsistent voltages; after I bought and installed this all the warnings disappeared. Would recommend this if you use your Pi in an important use case.

I purchased an Argon ONE case and with my generic 3A adapter, I got constant under voltage errors, even just sitting at the splash screen. This solved all of that and will be my go-to PSU for any further RPi builds.