Please note that you need to choose the variant of add-ons for Q9 first, and then add to cart.
Palm Rest
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Keycaps
These keycap sets have the variant for Q9, and they all have additional keycaps for Windows and macOS.
Plates
Switches
Keychron Q9 has 52 keys. If you want to build a full keyboard you need to purchase [2 * 35 switches set].