Another alternative if you're nervous about drilling is to get a stereo with auxiliary USB ports. Mine came with two and as far as I can tell they do what any other USB would do. Including shutting off after an hour :)

Jeff

Sent from my iPhone

> On Jul 5, 2015, at 4:45 PM, Jim Felder <jim.felder@GMAIL.COM> wrote:
> 
> I'm wanting to install some USB ports in my dash. What's a recommended
> means of drilling or cutting a 1" hole in dash metal?
> 
> Thanks,
> 
> Jim