Keychron C3 Pro Quick Start Manual page 2

3
The Layers
There are four layers of key settings on the If your keyboard is switched
keyboard. The layer 0 and layer 1 are for the to Mac, then layer 0 will be
Mac system. The layer 2 and layer 3 are for activated.
the Windows system.
5
Adjust The Backlight Brightness
Press FN + W to increase the backlight brightness
FN + W
7
The Key Rollover
Press FN + N to switch 6-key rollover/N-key rollover
FN + N
If your keyboard is switched to Windows, then the
layer 2 will be activated. Remember that if you are
using it in Windows mode, please make changes to
the layer 2 instead of the top layer (the layer 0).
This is a common mistake people are making.
Press FN + S to decrease the backlight brightness
FN + S
6-key rollover: the keyboard can detect up to 6 simultaneous key inputs.
N-key rollover: the keyboard can detect all key inputs without limit to
the number of key presses.
* The keyboard turns on the N-key rollover by default.
4
The Backlight
Press FN + Q to change the lighting effect
FN + Q
6
Activate Siri / Cortana
For Siri on Mac: Go to System preferences > Siri >
select "Hold Command Space" option.
*Siri key only works on macOS and does not work on iOS.
8
Factory Reset
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support@keychron.com
Press FN + TAB to turn the backlight on/off
FN + TAB
For Cortana on Windows: Select Start > Settings > Cortana and
select the shortcut by pressing Windows key + C key.
*Windows Cortana is only available for Windows 10 and above OS. Cortana is
only available in certain countries / regions and might not work everywhere.
Hold Command Space
WIN + C
Troubleshooting? Don't know what's going on with the keyboard?
① Plug in the power cable and factory reset the keyboard by pressing
fn + J + Z (for 4 seconds).
② Download the right firmware and QMK Toolbox from our website.
③ Unplug the power cable. Hold the ESC key* first and then plug the cable
in again.
④ Release the ESC key, and the keyboard will now enter DFU mode.
Please flash the firmware with QMK Toolbox.
⑤ Factory reset the keyboard again by pressing fn + J + Z (for 4 seconds).
Or hold the reset button under the space bar keycap.