Lets use the "Like"-Button to see faster if the short cable work around is working on your side as well.

Short update .. new cable delivered: Thunderbolt 3, USB4.0, length: 1,20cm Result: My connection with HP Monitor S340c is working as expected. PD working, Video-Connection working, Mouse and Keyboard working.

Short update .. new cable ordered and delivered: Thunderbolt 3, USB4.0, length: 1,20cm Result: My connection with HP Monitor S340c is working as expected. PD working, Video-Connection working, Mouse and Keyboard working.