A:AnswerYou could run it from the wall with a usb wall charger such as for a smartphone. They are quite cheap these days. It requires usb to run, but that usb does not need to be from the computer.
A:AnswerIts pretty quiet when it works. USB connecting ports are really loose coming out of the box. You have to wiggle the cord to get it to work sometimes. Kind of annoying when your trying to play a game.
A:AnswerIt has kept my laptop cool. I use it everyday to play the different Microsoft Daily Challenges and the Microsoft Solitaire Events. I don't see why it wouldn't work for you too.