Do you have a question about the Logitech G412 TKL SE and is the answer not in the manual?
Press FN + INS to capture the screen display.
Press FN + HOME to activate or deactivate Scroll Lock.
Disable or enable the Windows key functionality by pressing FN + Windows key.
Press FN + F12 to cycle through five onboard lighting patterns.
Increase or decrease lighting effect speed using FN + Arrow keys.