Nintendo Switch Hardware Alternate unlock sound effects
When waking the Nintendo Switch from Sleep mode while it is not connected to the dock, you have to press a button three times to fully unlock it for play (it does not matter which one you use). Most buttons provide a standard “click” sound effect when pressed, but using certain buttons will give alternate sound effects. The ZL and ZR buttons both have unique effects, as well as clicking the Left and Right Analog-stick three times.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original