Great thank you for your information. It would help me a lot.
19.2kW AC on-board charger is $1,680 and no additional cost for choosing that option. The dealer told me that I don't have to worry about the 19.2kW thing since they are going to take care of everything.
I live in Texas, US.
I've ordered Taycan 4S yesterday and added HUD and 19.2 kW AC On-Board Charger.
(You can add those options at your local dealership in the US but not at Porsche website.)
I have only 120V power outlets in my garage so I have to tell my electrician to install 240V outlets...