When multiple ports are used to charge at the same time, the adaptor will reallocate power, which can lead to a decrease in the power of the original charging port. For example, the adaptor will maintain a charging output of 45 W for the C1 port. Please refer to the User Guide for more details. If the correct interface is used, it could be that the laptop cannot be charged at a power of 65 W or less. It is recommended to use the adaptor to charge the laptop separately.