Can I use a power adapter of 33 W or higher?

Yes. This model supports fast charging up to 45 W and is compatible with mainstream fast charging protocols including PD 3.0, PD 2.0, and PPS.  

A power adapter is not included in the standard package (available as an optional accessory). The device is equipped with dual USB-C ports that both support charging interchangeably; however, they cannot charge simultaneously. You can use one port for DP-IN projection while charging via the other.