Powersupply - is 12V enough?

I had two powersuuplies next to each other.
The dedicated one for my Wyse 5060 is 19.5V, 65W. But, by mistake, I connected it to 12V (130W). And... everything works. It was connected one week and I realized it now.
My device plays the role of custom made media player, with connected character LCD (on USB), remote, keyboard etc.
No problem, no issues, no power shortage.
Am I very lucky, or it "should" work? May I expect any consequences in case when it works stable?