Ever since I found the V4L pass
through, I've been using it with my laptop for hours a day. I leave it plugged in all the time. Never had a problem and my first pass
through just quit working after 7 months of use
[...]
Then I started reading horror stories about passthroughs maybe ruining computers. [...]
I don't really like using the USB ports on my computer because of potential damage. I had to replace a previous laptop because the USB ports stopped working. (My guess is it was because they wore out from having my printer plugged into it all the time, and whenever I picked up the laptop to work on it a couple feet away from the printer, I'm sure the cord to the USB got jiggled a bit.) It was cheaper to
buy a new computer than to have the USB ports replaced.