Amazon.com: New US Black English Backlit Laptop Keyboard (Without palmrest) Replacement for Lenovo IdeaPad S340-15API S340-15 S340-15IML S340-15IWL Light Backlight : Electronics
Lenovo Y740 Keyboard lighting issues : r/Lenovo
How do you turn on the keyboard lighting on your laptop? - Coolblue - anything for a smile