Hardware

Sometimes known as the "Moon" Board, because it has a crescent moon in the bottom left which is the power button. No physical erasers are on this board -- you can just use your palm to erase.

Power button is on the side panel. There are two pens and two erasers, but you can choose to use your palm to erase. 

Power button on the bottom right. No physical erasers are on this board -- you can just use your palm to erase.

Power button is on the side panel and has grey speakers in bottom left and right. Two pens and two erasers, but you can also use your palm to erase.

Power button is on the side panel. Four pens and one eraser, but you can also choose to use your palm to erase.