"Wireless" USB and disconnection issue

I’ve looked at a bit of posts in this community and a lot of people are talking about grounding things. I’m not sure how to do it on a practical level though?

Do you have any links to posts or guides about grounding for the Shapeoko? Is it just the machine itself or is it the vacuum? Any pictures?

Edit: @gdon_2003 I have my Shapeoko in an enclosure: Designing a soundproof'ish enclosure for my new SO3. Do you think it would help to put a glass of water or something like that in there to increase the humidity? Kind of like in a humidor (cigar box)?