Lenovo ideapad 330-15IKB User Manual page 12

Chapter 1. Getting to know your computer
Function key combinations
Through the use of the function keys, you can change operational features
instantly. To use this function, press and hold Fn a; then press one of the
function keys b.
Lenovo ideapad 330-14IKB / ideapad 330-14AST
Lenovo ideapad 330-15IKB / ideapad 330-15AST / 
ideapad 330-15IKB Touch
a
6
a
b
b