Dypen, NO NO NO, wait.
You have to read a little more up, I said I bought that adapter but it was burned when I tried to charge the Garmin Aera, so THAT ADAPTER IS NOT VALID FOR OUR GPS. In fact, the adapter I received had 600 mA, that they didn't was enough to our GPS.
I'll pick up the Garmin AC adapter cable tomorrow, because I have just to arrive from work and I have read a message from the courier that he tried to give me by I wasn't at home, so If you want I will tell you how it is work with our GPS.
See you soon.