Each push button is engraved with a text legend or icon and backlit with RGB LED that gives status feedback. The knobs are numbered from top to bottom, so the top one is knob#1 and the bottom one is knob#4. We will refer knobs in this way throughout this guide. | Each push button is engraved with a text legend or icon and backlit with RGB LED that gives status feedback. The knobs are numbered from top to bottom, so the top one is knob#1 and the bottom one is knob#4. We will refer knobs in this way throughout this guide. |