XPS 9510: Thunberbolt 4 power and USB-C power via a Dock simultaneously

Question

I have the XPS 15 (9510) running Ubuntu 21.04 connected to power via one of the Thunderbolt 4 ports on the left site, occasionally I connect on the right side of the laptop (USB-C), a small dock that also provides power via USB-C PD (it is required to operate the dock), having 2 power sources, will that damage the laptop? Or the laptop will keep using only the TB4 (it was already active when I plugged the dock) and discard the power provided by the dock? Thanks

DELL-Cares · Answer

We tried reaching you on a private message asking for the Service Tag number to ascertain the warranty but did not receive a response. Please feel free to reply to the private message whenever you are available.

jphughan · Answer

@logicito  It’s not a problem. The system will draw from whichever power source it decides is better, and USB PD doesn’t allow the power source to 'force' the device to accept power it doesn’t want.