super fast charger! I also need it to charge smartphones or to keep them in operation.
Tip: the technical data of your Zeenbook should show how many watts it needs at maximum. If it is more than 56W, this power supply would be too weak.

No experience with Asus devices. I use it with Huawei P20Lite, iPhone SE, iPad Air2 and MacBook Pro 2017 and UE Megaboom. Works perfectly (the MacBook has a slightly stronger original power supply, therefore has a slightly longer charging time).