Stage three. Also try plugging in a very keyboard you are aware of capabilities to the port. If it really works, you realize The problem is along with your keyboard, not the port. Google keyboard may be the lightest and it is a pretty good darn keyboard. If you prefer http://lightestkeyboard50493.atualblog.com/8724165/how-lightest-keyboard-can-save-you-time-stress-and-money