Review on 🔌 High-Speed 4-Port USB Wall Charger - 40W Output, Foldable Plug - iPhone 12, iPad Pro, Galaxy, and More by Joy Vogelzang

Obviously the USB-C connector is different from the three USB-A connectors; However, USB-A connectors vary in performance. Port A, which is the farthest from port C, failed to charge my iPhone 11 Pro with a wireless charger. Switching to the USB-A port closest to the USB-C port worked fine and I use the other port to charge my Apple Watch. Although no documentation came with the charger, there is documentation online that confirms that the USB-A port closest to the USB-C port is 18W and the other two are 5W. I've had this charger for less than a week so my comments are based on limited experience.