How to use the 35W Dual USB-C Port Power Adapter
You can use the 35W Dual USB-C Port Power Adapter to charge up to two devices at the same time.
35W Dual USB-C Port Compact Power Adapter
35W Dual USB-C Port Power Adapter
Charge a single device
To charge a single device, connect your device to either USB-C port on your power adapter.
Charge two devices
To charge two devices, connect your devices to either port on your power adapter. When you connect two devices, power is automatically distributed between them based on their power requirements. For most devices, power is shared evenly when you have two devices charging at the same time. For example:
If you connect a Mac laptop and an iPhone or iPad, each device receives up to 17.5W.
If you connect an iPhone and an iPad, each device receives up to 17.5W.
If you connect a Mac laptop or iPhone and an Apple Watch or AirPods, the Mac laptop or iPhone receives up to 27.5W and the Apple Watch or AirPods receive up to 7.5W.
If either device needs more power, unplug the other device and its charging cable from your power adapter.
If your device doesn't charge, loses charge, or charges slowly
Your device might need more power than the power adapter can provide across one or both ports. Try these solutions:
Try charging a single device to ensure that your device can get the most power from your power adapter.
If you’re charging only a single device, unplug any charging cable that is not in use.
Try a different charging cable—preferably the one that came with your device.
Make sure that your devices don't need more than 35W of power, which is the maximum amount of power that the power adapter can deliver.
If your device still isn't charging, your device may not be compliant with latest USB PD specifications.
If your device still won't charge after trying the above solutions, contact Apple.