Hold down the Touchpad (TP) Button and use the left thumbstick to navigate the touchpad feature.
You should be able to type with it just as you would with the touchpad.
The cable is 2 meters long.
The Air Glow controller connects to the PS4 via the USB port.
Use the FAN button to turn the fan on and off. Hold the FAN button down to change fan speed.
Use the LED button to turn the LEDs on and off. Hold the LED button down to change LED settings.