SUNSKY High Performance Pro Controller for Nintendo Wii U Console White

The Wii U Pro controller is standard sized and resembles a lot to the Xbox 360 controller in its button layouts. Here is the full button layout for the controller:

a: Dual analog sticks (clickable)

b: AB and XY buttons

c: A D-pad under the left analog stick

d: A power button for the console, and a Home, select and start button in the center.