Keychron Q9 User Guide

User Manual
Quick Start Guide
Keychron Q9 Keycap Size 
Keychron Q9 Keyboard Plate File
How to Factory Reset (Firmware)

Assembling Guide

How to Disassemble Q Series Keyboard
How to Replace the Plate
How to Remove and Assemble Daughter PCB

Software Guide

Learn More How to Use VIA
How To Program Backlight Keys On VIA 
How To Do A Keyboard Test
How to Use VIA To Pair with Keychron Q9