Keychron K2 Keyboard Instruction Manual

Manual Keychron K2 Keyboard Instruction Manual

Keychron K2 Keyboard Instruction Manual

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Keychron K2 Keyboard

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Keychron K2 Keyboard Instructions

Here we offer the Keychron K2 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 K2 Keyboard, we suggest checking the Frequently Asked Questions (FAQs) section of this manual.


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Keychron K2 Keyboard Specifications

Feature Specification
Product Name Keychron K2 Bluetooth Mechanical Keyboard
Number of Keys 84
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
Maximum Charging Input 5V / 2A
Recommended Charger 5V 2A adapter or USB 3.0 port
Connection Modes Bluetooth / Wired (Type-C cable)
Bluetooth Operating Distance Within 10 meters (open space)
Bluetooth Device Name Keychron K2
Multi-Device Pairing Up to 3 devices (fn + 1 / fn + 2 / fn + 3)
Auto Sleep Timer 10 minutes of inactivity (Bluetooth mode)
Supported Operating Systems Mac/iOS, Windows/Android (Linux supported via community group)
Operating Environment -10 °C to 50 °C (5 °F to 131 °F)
Toggle Switches OS Toggle (Win/Android – Mac/iOS); Mode Toggle (BT – OFF – Cable)
Indicators Bluetooth indicator, Battery indicator
Package Contents Keyboard x1, Type-C Cable x1, Manual x1, Quick Start Guide x1, Extra Keycaps Set x1
Manufacturer Keychron, Inc., Dover, DE 19901, United States
Country of Manufacture China

Keychron K2 Keyboard Details

The Keychron K2 is a compact 84-key mechanical keyboard that works on both Mac and Windows. The box includes an extra keycap set for Windows users. The Quick Start Guide shows which Mac keycaps to replace with the Windows versions. An OS toggle switch on the side changes the layout between Mac/iOS and Windows/Android. In Windows/Android mode, the Command and Option key positions work as the Windows and Alt keys.

A second toggle switch sets the connection mode: BT, OFF, or Cable. To pair over Bluetooth, move the switch to Bluetooth and hold fn + 1 for 4 seconds. The Bluetooth indicator then flashes quickly for 3 minutes while the keyboard waits to pair. Select "Keychron K2" on your device, and the indicator turns off once pairing succeeds. You can store more devices under fn + 2 and fn + 3, then switch between all three with a short press.

Two LEDs show the keyboard's status. The battery indicator blinks red when the battery is low, stays solid red while charging, and turns solid green when fully charged. The Bluetooth indicator blinks fast during pairing, turns off once connected, and blinks slowly while switching between devices. You can charge the keyboard in Bluetooth mode, in cable mode, or while it is switched off. The manual says any USB port works, but a 5V 2A adapter or a USB 3.0 port gives the best results.

A dedicated light effect key changes the backlight. Each short press moves to the next lighting effect. On the RGB version, fn + left arrow or fn + right arrow changes the backlight color. The top row switches between multimedia keys and standard function keys F1–F12. On Windows, hold fn + X + L for 4 seconds to toggle between them. On Mac, go to System Settings, open Keyboard, and enable "Use F1, F2, etc. keys as standard function keys". To use F5 and F6 as function keys, hold fn + K + C for 4 seconds.

To save power, the keyboard goes into Auto Sleep Mode after 10 minutes of inactivity in Bluetooth mode, and the backlight turns off. Press any key to wake it. To turn this feature off, hold fn + S + O for 4 seconds. Holding the same combination again turns it back on. For key remapping, Keychron recommends Karabiner on macOS and SharpKeys on Windows. Neither program can remap the light effect key. Linux users can search for "Keychron Linux Group" on Facebook for community support.

On iOS, Ctrl + Space switches the input method. Caps Lock can also switch languages after you enable that option in the iOS keyboard settings. If the keyboard behaves unexpectedly, hold fn + J + Z for 4 seconds to restore the factory settings. The troubleshooting section suggests turning the keyboard off and on, removing it from the device's Bluetooth settings, and restarting the device. It also warns that a metal surface under the keyboard can weaken the Bluetooth signal.

The manual also notes that some multimedia keys or third-party input tools may not work on certain Windows or Android systems. This depends on the OS version, brand, and drivers, so keep your system and drivers up to date. For safety, keep the keyboard, accessories, and packaging away from children, keep the keyboard dry to prevent corrosion, and use it only within the stated temperature range. This protects both the keyboard and its battery.

Frequently Asked Questions (FAQs)

Can't find the answer you need? Here are some frequently asked questions about the Keychron K2 Keyboard, and we answer them below.


How do I pair the Keychron K2 with a Bluetooth device?
Move the mode toggle to Bluetooth and hold fn + 1 for 4 seconds. The Bluetooth indicator flashes quickly for up to 3 minutes. On your device, find and select "Keychron K2". The indicator turns off once pairing succeeds.

How many devices can the Keychron K2 connect to?
It can store up to 3 devices at once, assigned to fn + 1, fn + 2 and fn + 3. Press the matching combination to switch to that device.

How long does the battery last and how long does it take to charge?
The 4000 mAh battery lasts around 70 hours with the backlight on. A full charge takes about 3 hours over USB Type-C.

What charger should I use?
Use a 5V 2A adapter or a USB 3.0 port for the best results. The keyboard accepts up to 5V and 2A. Keychron is not responsible for problems caused by improper charging.

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

How do I use F1–F12 as standard function keys?
On Windows, hold fn + X + L for 4 seconds to switch between function keys and multimedia keys. On Mac, go to System Settings, open Keyboard, and enable the standard function keys option. To use F5 and F6 as function keys, hold fn + K + C for 4 seconds.

How do I disable Auto Sleep Mode?
Hold fn + S + O for 4 seconds. Hold the same combination again to turn Auto Sleep back on. When enabled, the keyboard sleeps after 10 minutes of inactivity in Bluetooth mode.

How do I factory reset the Keychron K2?
Hold fn + J + Z for 4 seconds to restore the factory settings.

Can I remap the keys?
Keychron has no official remapping software yet. You can use Karabiner on Mac or SharpKeys on Windows. Neither can remap the light effect key.

What do the LED indicators mean?
Battery indicator: blinking red means low battery, solid red means charging, and solid green means fully charged. Bluetooth indicator: fast blinking means pairing, off means connected, and slow blinking means switching devices.

Why does the Bluetooth connection drop even within 10 meters?
Check whether the keyboard is sitting on a metal surface, which can interfere with the Bluetooth signal. Different Bluetooth versions can also cause slow or failed connections.

What should I do if my keyboard is not working?
Turn the keyboard off and back on. On your device, turn off Bluetooth, "forget" the keyboard, restart the device, and pair again. On Windows, it may also help to turn Bluetooth off and restart the computer.

Does the Keychron K2 work with Linux?
Yes. Keychron points Linux users to the "Keychron Linux Group" on Facebook for setup help.

What is the safe operating temperature range?
Use the keyboard between -10 °C (5 °F) and 50 °C (131 °F) to protect the keyboard and its battery.

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