Note:
For iPad Air 2020 10.9”(4th Generation), iPad Pro 12.9" Gen3/Gen4, and iPad Pro 11", you need a USB-C to USB-C Cable, not USB-C to Lightning Cable.
To ensure PD fast charging effect, pls use 18W+ adapters supporting PD charging.
iPhone 8 or later models support fast charging, previous models only support normal charging