#How to supply power to the Arietta G25

##Supply power at 5 volt

use the microUSB __or__ the J4.1 (5 volt DC in) and J4.9 (GND) pins. Never use both.

<img class="acme" src="./arietta_power_5v.jpg"/>

##Supply power at 3.3 volt

It is possible to supply power at 3.3 volt to the Arietta 
using:

* __J4.5__ 3.3 volt power in
* __J4.9__ GND power in 

Using this power option it is not possible to use the miniusb connector anymore.

To mantain the USB client function on the micro USB it is required to remove the R36 
resistor as shown below. In this way the microUSB is not powering Arietta but 
the USB lines to the PC will work as usual.

<img src="./r36.jpg" class="float">