Hey Peter,
That’s great, according to the Latte Panda Documentation (http://docs.lattepanda.com/content/alpha_edition/powering/) standard power is DC 12V@3A but the Alpha is capable of handling a range of 10 to 15 V recommended at 36 Watts so a 12V supply capable of 4.7A providing 56.4 Watts such as the one you’re using should work fine. (Still worth checking the documentation to ensure proper connection to the board) Have fun with your board!
Sincerely,
Bryce
