I think it was a notebook with aluminium frame, which would make grounding appropriate. I had a Dell XPS 15 with aluminium frame once and discovered that it wa

I think it was a notebook with aluminium frame, which would make grounding appropriate. I had a Dell XPS 15 with aluminium frame once and discovered that it was grounded when I was in a hotel abroad with no ground on the outlets and – my wrist-rest got uncomfortable. I then quickly fudged some wire from the notebook to a radiator, though.