USB charge/audio port?

Thanks, I just ordered one of these. Your help is much appreciated.

 

For anyone still looking, after an extremely long delay with shipping (it arrived in the US in Miami on December 23rd but wasn't delivered to me until last week by the USPS) I received the item and installed it. It fits perfectly in my existing blank next to my OEM aux port. Initially I hooked the "charge only" USB port to constant 12v power on my stereo but there is a small blue LED indicator on the charge port and I don't drive my truck everyday anymore and it could sit for a week at a time or more. I connected it to the switched 12v instead on my stereo. The USB "audio" port has a long USB lead that connected directly to the USB adapter i purchased (metra) when I did my 2014 retrofit. It functions as a charger and audio port and works as expected.

Right now I am very happy with the way it all worked out.