user70591: I have an A6 GPRS module, and my Samsung phone power adapter has output of 5V and 2A. But it also says 9V and 1.6A

My Phone's Adapter 
So would it damage my A6 GPRS Module if I plug this to it via the micro usb power port? (especially because it also says 9V)?

My A6 GPRS module 

user69592: The standard output for USB is 5V but there are some such chargers that will output more for enhanced charging output on devices that support it.
In this case the adapter will default to 5V and will only upgrade to 9V if the device requests it.  The GPRS module will not request 9V and so the adapter will continue to provide only 5V which is what you want.

70591: <p>I have an A6 GPRS module, and my Samsung phone power adapter has output of 5V and 2A. But it also says 9V and 1.6A</p>
<p><a href="https://i.stack.imgur.com/t2nMp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/t2nMp.png" alt="My Samsung Mobile Power Adapter" /></a>
My Phone's Adapter </p>
<p>So would it damage my A6 GPRS Module if I plug this to it via the micro usb power port? (especially because it also says 9V)?</p>
<p><a href="https://i.stack.imgur.com/HhhAW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HhhAW.png" alt="My A6 GPRS module" /></a></p>
<p>My A6 GPRS module </p>
 69592: <p>The standard output for USB is 5V but there are some such chargers that will output more for enhanced charging output on devices that support it.</p>
<p>In this case the adapter will default to 5V and will only upgrade to 9V if the device requests it.  The GPRS module will not request 9V and so the adapter will continue to provide only 5V which is what you want.</p>
