Hi Marco, I have never tried this on the Galaxy Tab S/+, it works on the S20 ultra phone but I use it very rarely as the resolution is not that great. There is also the problem of not being able to charge while the Dex USB C cable is in the charging port. However, with the Dex Pad, and the Dex Station, it's mega great, and stable, as there is also charging power. LG Winnie

Basically yes, but not 4K (3840 × 2160) - picture doesn't look as sharp, with upscaling at slightly better.
I am sending this cable back.