Acer Predator Helios 300 (PH315-53) original keyboard DE (german) - sparepartworld.com
Amazon.com: New US Black English Backlit Laptop Keyboard (Without palmrest) Replacement for Acer Predator Helios 300 PH317-51 PH317-51-787B PH315-51 PH315-51-73SO Light Backlight : Electronics