Q1: Why does it sometimes wake up my device when I plug in or unplug another device ?

When multiple devices are connected at the same time, plugging a new device in or unplugging any of the devices from the charger will render a short charging pause for other devices. This short pause is due to the power redistribution of the charger.

Q2: How to get the best performance of all charging ports?

When you need to use 2 or more of the charging ports simultaneously, to maximize the output power, it is suggested to preferentially use the C2/A ports. The combination of C1 and A is not recommended because the power output would be minimal in this case.

Generally, we suggest you use the USB C port to charge Apple watch. If you want to to use the USB A port, only the C1 and A port can be used simultaneously.