Examples: MacBook Air, Surface Laptop Go
The easiest way is to check your device specifications in the instruction booklet or manufacturer’s website – look for “USB Type-C charging” or “USB Power Delivery” features. Alternatively, check the design of the port used for charging – USB Type-C looks like the image below.
Generally, smaller laptops will charge at lower speeds, and larger laptops require higher speeds to charge correctly. Some exceptions apply (for example, higher-spec models), so you should check the specifications for your device to ensure you’re supplying the correct amount of power. You should also ensure you are using a cable rated for the correct speed (such as 60W or 100W).
Wattages shown as general guide only, please check power and cable requirements for your device