Keychron K8 Pro Bluetooth Mechanical Keyboard User Guide
- June 5, 2024
- Keychron
Table of Contents
K8 Pro Bluetooth Mechanical Keyboard User Guide
IN THE BOX:
- Keychron KB Pro Bluetooth Mechanical Keyboard x 1
- Type-C Cable * 1
- Manual* 1
- Quick Start Guide * 1
- Extra Keycaps Set* 1
Quick Start Guide
If you are a Windows user, please find the appropriate keycaps in the box, then follow the instructions below to find and replace the following keycaps.
Mac/Windows
1. Connect Bluetooth
2. Connect Cable
3. The VIA Key Remapping Software
Please visit caniusevia.com to download the latest VIA software to remap the
keys.
If the VIA software cannot recognize your keyboard, please reach out to our
support to get the instruction. (VIA only works when the keyboard is connected
by wire to the computer.)
4. The Layers
There are four layers of key settings on the keyboard. Layer O and layer 1 are
for the Mac system. Layer 2 and layer 3 are for the Windows system.
If your system toggle is switched to Mac, then layer 0 will be activated.
If your system toggle is switched to Windows, then layer 2 will be activated.
Remember that if you are using it in Windows mode, please make changes to
layer 2 instead of the top layer (layer 0).
This is a common mistake people are making.
5. The Backlight
Press fn + Q to change the lighting effect 
Press fn + tab to turn the backlight on/off
6. Adjust The Backlight Brightness
Press fn + W to increase the backlight brightness
Press fn + S to decrease the backlight brightness
7. Activate Siri/Cortana
For Siri on Mac: Go to System preferences> Siri> select the “Hold Command-
Space” option.
Siri key only works on macOS and does not work on iOS. 
For Cortana on Windows: Select Start > Settings > Cortana and select the shortcut by pressing the 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
8. Warranty
The keyboard is highly customizable and easy to be rebuilt.
If anything goes wrong with any of the keyboard components of the keyboard
during the warranty period, we will only replace the defective parts of the
keyboard, not the whole keyboard.
9. Watch The Building Tutorial On Our Website
If you are building the keyboard for the first time, we highly recommend you watch the building tutorial video on our website first, then start building the keyboard yourself.
10. Factory Reset
Troubleshooting? Don’t know what’s going on with the keyboard?
-
Try factory reset by pressing fn + J + Z (for 4 seconds).
-
Download the right firmware for your keyboard from our website.
Remove the power cable from the keyboard. -
Remove the space bar keycap to find the reset button on the PCB and switch the keyboard to cable mode.
-
Hold the reset key while plugging in the power cable and then release the reset key. The keyboard now will enter DFU mode.
-
Flash the firmware with the QMK Toolbox.
-
Factory reset the keyboard again by pressing fn + J + Z (for 4 seconds).
- Step by step guide can be found on our website
K8 PRO BLUETOOTH MECHANICAL KEYBOARD SPECIFICATIONS
- Number of keys: 87
- Switch type: Mechanical
- Battery: 4000mAh
- Working time: Around 70 hours with the backlight on.
- Charging time: Around 3 hours
- Charging port: USB Type-C
- Mode: Bluetooth/Wired
- Bluetooth operating distance: Within 10 meters (open space)
- Name of Bluetooth device: Keychron K8 Pro
- Operating Environment: -10 to 50°c
Technical specifications can be subjected to change without notice we apologize for any inconvenience caused
K8 PRO BLUETOOTH MECHANICAL KEYBOARD OVERVIEW
- Charging indicator
- Bluetooth indicator
- Caps Lock indicator
- Charging port
- Win/Android Mac/iOS (OS Toggle Switch)
- BT OFF Cable (Mode Toggle Switch)
DEFAULT KEY LAYOUT
LAYER 0: This layer will be activated when your keyboard’s system toggle is switched to Mac.
LAYER 1: This layer will be activated when your keyboard’s system toggle is switched to Mac and press the fn/MO(1) key.
LAYER 2: This layer will be activated when your keyboard’s system toggle
is switched to Windows.
LWin = Left Windows LAlt = Left Alt RAlt =
Right Alt RWin=Right Windows RCtl=Right Ctrl
LAYER 3: This layer will be activated when your keyboard’s system toggle
is switched to Windows and press the fn/MO(3) key.
KEY DESCRIPTION
Key Description
Ser-| Screen Brightness Decrease
Ser+| Screen Brightness Increase
Bright-| Backlight Decrease
Bright+| Backlight Increase
Prvs| Previous
Play| Play/Pause
Next| Next
Mute| Mute
Vol-| Volume Decrease
Vol+| Volume Increase
RGBToggle| Turn Backlight on/off
RGBMd+| RGB Mode Next
RGBMd| RGB Mode Previous
Hue+| Hue Increase
Hue-| Hue Decrease
RGBSPI| RGB Speed Increase
RGB SPD| RGB Speed Decrease
MO(1)| Layer 1 will be activated when holding this key
MO(2)| Layer 2 will be activated when holding this key
MO(3)| Layer 3 will be activated when holding this key
MO(4)| Layer 4 will be activated when holding this key
BTH1| Bluetooth Host 1
BTH2| Bluetooth Host 2
BTH3| Bluetooth Host 3
LED STATUS OVERVIEW
| LED Location | Function | Status |
|---|---|---|
| Battery indicator | Charging | Low battery – Blinking Red |
Charging – Static Red
Fully charged – Static Green
Bluetooth indicator| Bluetooth| Pairing – Slow Blinking
Paired – Light Off
Switching – Fast Blinking
FUNCTION DESCRIPTION
CHARGING
Plug the cable into a USB port and plug the other end into the keyboard port.
Charging Indicator:
When the battery is below 15%, a red battery blinking indicator will be
triggered. A red light will stay on while charging; Fully charged in around 3
hours, a green battery indicator will appear.
*The Keychron keyboard is compatible with all USB ports. Please use an SV 2A adapter or USB 3.0 for the best performance. The Keychain K8 Pro can be charged in Bluetooth/on/off mode.
** This product supports up to SV charging voltage and 2A charging current. We
are not responsible for any problems caused by improper charging.
BLUETOOTH/WIRED MODE (TOGGLE SWITCH) WIRED MODE
- Switch the toggle switch to the Cable option (it only works when a USB cable is plugged in).
- Connect our cable with your PC and keyboard.
- The Backlit will be turned on.
*Under Wired Mode, the keyboard will not enter into Battery Saver Mode.
BLUETOOTH MODE
- Switch the keyboard to the Bluetooth option.
- The Backlit will be turned on.
- Hold the “Fn+1” key for 4 seconds to activate Bluetooth pairing (the Bluetooth indicator fast flashes for 3 minutes to detect pairing.
- Search for the Bluetooth device “Keychron K8 Pro” on your device and connect it (the Bluetooth indicator goes off after successful pairing).
Note: This keyboard supports pairing up to 3 devices simultaneously via combination key fn”+”1″/’f’+”2/”fn”+3:
*The Bluetooth indicator will continue to flash for 3 minutes.
**Slow or failed connections may exist due to different Bluetooth versions, please make sure all the settings are correct.
SWITCH BLUETOOTH DEVICES
Short press combination key “fn” +”1″/ “fn” +”2″/ “fn” +”3″ to switch to other
device.
RECONNECT:
- Switch the keyboard to the Bluetooth option to activate the keyboard (the keyboard will connect to the last connected device by default).
- The Bluetooth indicator flashes for 4 seconds and automatically pairs with the last paired device.
- If the Bluetooth indicator is off, press any button to enter the connection again.
The keyboard must have been paired with the device to perform this function.
TURN OFF THE KEYBOARD
Switch to “Off”
BACKLIT SETTING
- Short press to switch between different types of lighting effects.
- When backlit is on, press the button to switch among them.
OS SWITCH
-
MAC/iOS
Turn the switch to Mac/iOS when you are connected to a Mac or iOS operating system. -
WINDOWS/ANDROID
Switch the toggle to Windows/Android when the keyboard is connected to a Windows or Android operating system.
When using the Windows/Android mode, keys are used for “Windows” and “Alt” functions. -
INPUT METHOD SWITCH
For ios:
Input method switch: Ctrl + Space
Caps Lock Caps (Enable General>Keyboards>Hardware Keyboard>Caps Lock Language Switch)
For Android:
Input method switch: Shift+ Space
NOTE: Functions of certain multimedia keys may be disabled due to compatibility, versions, brands, and drivers of Windows/Android OS. We also recommend not to switch OS frequently as it may impact keyboard operations.
TROUBLESHOOTING
If unable to pair the keyboard to the device, confirm that the device you’re trying to pair with is Bluetooth-capable. If so, restart the device and try pairing it with the keyboard again.
Note: On a Windows computer, a new Bluetooth connection will sometimes require additional software updates-a process that may still be ongoing after a message appears indicating successful completion. Wait at least 20 minutes after pairing to make sure all updates are completed before restarting the computer.
Confirm that the device is configured to accept Bluetooth connections (Windows) and supports an external keyboard (HID profile).
Go to Bluetooth Devices > Open Settings and select the following:
Allow Bluetooth devices to find this computer
Allow Bluetooth devices to connect to this computer
Alert me when a Bluetooth device wants to connect
My keyboard isn’t working.
For the keyboard: Turn the keyboard off and back on.
Turn Bluetooth off and restart the computer. (Windows)
For the device:
Go to Bluetooth settings and turn off Bluetooth and “forget” the keyboard.
Restart the device and turn on Bluetooth to reconnect.
Bluetooth connection is interrupted even within 10 meters.
Check if the keyboard is resting on a metal surface that can interfere with
the Bluetooth signal.
Third-party input tools are not compatible with the keyboard.
Due to compatibility, versions, brands, and drivers of Windows/Android OS,
functions of third-party input tools may be affected while using the keyboard.
Please make sure your operating system and drivers are up to date.
Certain fn keys or multimedia keys do not work under Windows/Android mode.
Functions of certain multimedia keys may be disabled due to compatibility,
versions, brands, and drivers of Windows/Android OS.
Safety Precaution:
Keep the product, accessories, and packaging parts out of reach of children to
prevent any accidents and choking hazards.
Always keep the product dry to avoid corrosion.
Do not expose the product to extreme temperatures below -10C (5F) or above
50°C (131 °F) to preserve the lifespan of the keyboard and battery.
Keychron, Inc.
Dover, DE 19901, United States
Find us at:
https://www.keychron.com
Support@keychron.com
@keychron
@keychron
@keychronMK
Designed by Keychain
Made in China
Documents / Resources
|
Keychron K8 Pro Bluetooth Mechanical
Keyboard
[pdf] User Guide
K8 Pro, Bluetooth Mechanical Keyboard, Mechanical Keyboard
---|---
|
Keychron K8 Pro Bluetooth Mechanical
Keyboard
[pdf] User Guide
K8 Pro Bluetooth Mechanical Keyboard, K8, Pro Bluetooth Mechanical Keyboard,
Bluetooth Mechanical Keyboard, Mechanical Keyboard, Keyboard
|
Keychron K8 Pro Bluetooth Mechanical
keyboard
[pdf] User Guide
2ASF4-K8PRO, 2ASF4K8PRO, K8 Pro, K8 Pro Bluetooth Mechanical keyboard,
Bluetooth Mechanical keyboard, Mechanical keyboard, keyboard