A:AnswerYes, the Thunderbolt 4 supports power delivery and Displayport 1.4. The difference between the Q538 and UX563 is hardware configuration. The stylus and sleeve are optional, these need to be purchased separately.
A:AnswerJust to clarify, there's only ONE USB-C port and unfortunately, you cannot charge/power the laptop through it. You'll have to use the power adapter that's included to charge/power the laptop.