External USB Camera keeps turning on and off (see video)

I have a Sony camera connected via the elgato camlink stick. Everything worked fine, until I plugged in a multi-usb adapter. Then this strange behaviour you can see in the video occured, forever :(

Here are some logs

• Turned off and on
• Tried another Macbook (same behaviour there, very strange)
• I reset the SMC and PRam.

Hi guys, thanks for your support!

I do not know why, but it works.

I changed the adapter and everything works fine. That is weird, because everything worked fine with the adapter that I exchanged. Thanks for your thoughts @logixal, inspired me to adjust a cable.

I am not sure if this will help anyone out there, as my setup is quite specific.

But what I can tell (if someone stumbles upon these error messages) that this must be some software related issue. I am not sure, if the third party usb hardware that I have plugged in updated my usb drivers. Being uncertain, my next step would have been @danj s advice, speak to elgato / apple and sending them some of my logs (spotlight -> console).