Due to the higher power requirements, the Raspberry Pi 4 requires a 3.0A USB-C power supply. The Official USB-C power supply is specially designed and tested for the Raspberry Pi 4.Compatible with Raspberry Pi 4 only. Not compatible with Raspberry Pi 3 B, B+, A+ or Pi Zero...
The Official Raspberry Pi USB-C power supply is designed to power the latest Raspberry Pi 4 Model B boards. Suitable for All Raspberry Pi4 Models (1GB,2GB,4GB)...