It works offline, has no paywalls, and supports custom effects like "Rainbow Vortex" and "Breathing."

For more advanced per-key customization or to save specific profiles, you can download the free configuration tools directly from the manufacturer:

There is no official NOS software . Any executable claiming to be “NOS RGB Driver” is almost certainly malware or adware. Do not download it. Stick to keyboard shortcuts or OpenRGB.

Does your keyboard have any on the function keys (F1-F12) that we can use to narrow down the exact model shortcuts?

If you get stuck, hold Fn + Space for 3 seconds or press Fn + D then Enter to clear your custom settings. 2. Official NOS Software Downloads

The most interesting free feature? – your keyboard lights up and changes color in real time based on the beat of whatever song or game you're playing.

Caution: SignalRGB’s free version is ad-supported but functional. You do not need to pay for basic color changes.