The power adapter of my HP ZBook Firefly 16 G9 has an additional USB-Plug. What does is serve for?

[SE2024]

The power adapter of my HP ZBook Firefly 16 G9 has an additional USB-Plug. What does is serve for? What devices can be loaded or charged? What are the specifications of this USB-Connection in the Power-Adapter. 

The Power-Adapter is 110W, HP-Part-No: M52946-013

[Jupitero · Accepted solution]

Hello.

Firefly 16 G9 specifications lists it as "HP 100W+10W Slim USB-C+USB-A Straight AC Power Adapter", and the specifications are in the same document.

The extra USB-A plug is for charging low power (10W) devices such as phones. Just a handy extra feature.