I'm currently having charging issue with my asus 6z so is 30W asus Rog 2 charger suitable for asus 6z is it compatible?
Even if you use 30w charger to your 6z it will only take upto 18w max to charge your phone.
On top of that I would not recommend to use high capacity charger to a phone than it's limit of fast charging.if you do so it might damage your phone and the battery.
The charging controller is smart enough not to mind charging from a charger that is more powerful than the original, so no damage can occur. However, since there is a limit of 18W, just to protect the battery, no other most powerful charger will help you to speed up charging.
Hi ASUS 6Z supports 18W fast charger, it won't be recommended to use any other charger. Thanks.