Do you have a question about the YUNZII YZ-21 and is the answer not in the manual?
Control the keyboard's RGB backlight by pressing FN + Back.
Cycle through different RGB backlight effects using FN + 5.
Activate a single backlight color mode with FN + 1.
Access the calculator function using FN + 0.
Decrease the RGB backlight brightness with FN + -.
Increase the RGB backlight brightness with FN + +.
Slow down the RGB backlight effect speed using FN + /.
Speed up the RGB backlight effect using FN + x.
Download and install the keyboard driver from the official website.
Follow the steps to download and install the driver package.
Instructions on how to safely remove keycaps using a keycap puller tool.
Guide on properly orienting and installing keycaps onto switches.
Detailed steps for removing mechanical switches from the keyboard plate.
Instructions for correctly installing new mechanical switches into the keyboard.