Not all stereo head unit usb outlets have enough amps to charge all devices. That's one reason to have a dedicated usb outlet.

Alistair

> On Jul 5, 2015, at 6:57 PM, Jeff Palmer <jpalmer@MYMTS.NET> wrote:
> 
> 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