Keychron K8 Keyboard Instruction Manual

Manual Keychron K8 Keyboard Instruction Manual

Keychron K8 Keyboard Instruction Manual

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Keychron K8 Keyboard

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Keychron K8 Keyboard Instructions

Here we offer the Keychron K8 Keyboard manual completely free and in English. We have cataloged this manual in the Keyboards section on Manualverse, and it has been rated by 1 users with an average rating of 5. If you have any specific questions about Keychron K8 Keyboard, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.


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Keychron K8 Keyboard Specifications

Feature Specification
Product Name Keychron K8 Bluetooth Mechanical Keyboard
Layout / Number of Keys 87 keys
Switch Type Mechanical / Optical Switch
Battery Capacity 4000 mAh
Working Time Around 70 hours with the backlight on
Charging Time Around 3 hours
Charging Port USB Type-C
Connection Modes Bluetooth / Wired
Bluetooth Operating Distance Within 10 meters (open space)
Bluetooth Device Name Keychron K8
Bluetooth Device Slots 3 (fn + 1 / fn + 2 / fn + 3)
Maximum Charging Input 5 V / 2 A
Recommended Power Source 5 V 2 A adapter or USB 3.0 port
Operating Environment -10 °C to 50 °C (5 °F to 131 °F)
Auto Sleep Timer 10 minutes of inactivity (Bluetooth mode)
OS Toggle Switch Mac/iOS and Windows/Android
Mode Toggle Switch BT / OFF / Cable
Indicators Charging, Bluetooth, Caps Lock
Backlight Multiple lighting effects; adjustable colors on the RGB version
Package Contents Keyboard x 1, Type-C cable x 1, Manual x 1, Quick Start Guide x 1, Extra keycaps set x 1
Compliance FCC Part 15, Class B digital device
Manufacturer Keychron, Inc., Dover, DE 19901, United States
Country of Origin Made in China

Keychron K8 Keyboard Details

The Keychron K8 is a tenkeyless keyboard made to work with more than one operating system. It ships with Mac-oriented keycaps already fitted. Windows users will find replacement keycaps in the box and can use the Quick Start Guide to see which caps to swap. The OS toggle switch changes the key layout to match the connected system. In Windows/Android mode, the keys next to the spacebar act as Windows and Alt. On iOS, Ctrl + Space switches the input method.

To pair the keyboard, set the mode toggle to Bluetooth and hold fn + 1 for 4 seconds. Then choose the device named Keychron K8 on your computer, tablet or phone. You can pair up to three devices, one each on fn + 1, fn + 2 and fn + 3. A short press on the same combination switches between paired devices. For a wired connection, set the toggle to Cable and plug in the included Type-C cable.

The Bluetooth indicator shows the connection status. It blinks quickly while pairing, blinks slowly while switching devices and turns off once a device is paired. The battery indicator blinks red when the battery is low, stays red while charging and turns green when fully charged. The keyboard can charge while it is in Bluetooth mode, on or off. Keychron recommends a 5V 2A adapter or a USB 3.0 port for the best charging performance.

In Bluetooth mode, the keyboard goes to sleep and turns off the backlight after 10 minutes without use. Press any key to wake it. To turn off this power-saving mode, hold fn + S + O for 4 seconds, and use the same combination to turn it back on. The light effect key cycles through the lighting modes. On the RGB version, a short press on fn + left arrow or fn + right arrow changes the light color.

The function row works differently on each system. On a Mac, pressing F5 triggers its function directly, while on Windows the default is fn + F5. Windows users can hold fn + X + L for 4 seconds to switch this behavior. A dedicated key opens Siri on macOS but does not work on iOS. On Windows 10 and later, the same key can be mapped to Cortana with Windows key + C. Cortana is only available in certain countries and regions.

Keychron does not offer official remapping software yet. The manual suggests Karabiner for Mac and SharpKeys for Windows, which can remap every key except the light effect key. Linux users are directed to the Keychron Linux Group on Facebook. If the keyboard stops responding, turn it off and on again, remove it from your device's Bluetooth list and pair it again. Metal surfaces under the keyboard can weaken the Bluetooth signal. Keep the keyboard dry and away from children.

Frequently Asked Questions (FAQs)

Can't find the answer you need? Here are some frequently asked questions about the Keychron K8 Keyboard, and we answer them below.


How do I pair the Keychron K8 via Bluetooth?
Set the mode toggle switch to Bluetooth and hold fn + 1 for 4 seconds. Then select Keychron K8 in your device's Bluetooth settings.

How many devices can the Keychron K8 connect to?
It can pair with up to three Bluetooth devices, assigned to fn + 1, fn + 2 and fn + 3. A short press on the same combination switches between them.

How long does the Keychron K8 battery last?
The 4000 mAh battery lasts around 70 hours with the backlight on. A full charge takes about 3 hours.

What charger should I use with the Keychron K8?
Use a 5V 2A adapter or a USB 3.0 port. The keyboard accepts a maximum of 5V and 2A.

How do I disable the Auto Sleep Mode?
Hold fn + S + O for 4 seconds. Hold the same combination again to turn Auto Sleep back on.

How do I set up the Keychron K8 for Windows?
Move the OS toggle switch to Windows/Android and replace the Mac keycaps with the Windows keycaps included in the box.

How do I change the backlight effects and colors?
Press the light effect key to cycle through the lighting modes. On the RGB version, press fn + left arrow or fn + right arrow to change the color.

Can I remap the keys on the Keychron K8?
There is no official software yet. You can use Karabiner on Mac or SharpKeys on Windows. Every key can be remapped except the light effect key.

What does the Bluetooth indicator light mean?
Fast blinking means the keyboard is pairing. Slow blinking means it is switching devices. When the light is off, the keyboard is paired.

Why does my Bluetooth connection drop within 10 meters?
Check whether the keyboard is sitting on a metal surface, which can interfere with the Bluetooth signal.

My keyboard is not working. What should I do?
Turn the keyboard off and back on. Then turn off Bluetooth on your device, remove the keyboard from the list, restart the device and pair the keyboard again.

Does the Siri key work on iPhone or iPad?
No. The Siri key only works on macOS, not on iOS.

What temperatures can the Keychron K8 operate in?
It works between -10 °C and 50 °C (5 °F to 131 °F). Temperatures outside this range can shorten the life of the keyboard and its battery.

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