Keychron K2 Pro Bluetooth Mechanical Keyboard User Manual

: June 3, 2024
: Keychron

Table of Contents

Quick Start Guide
K2 PRO BLUETOOTH MECHANICAL KEYBOARD

K2 Pro Bluetooth Mechanical Keyboard

IN THE BOX:

Keychron K2 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

Connect Bluetooth

Connect Cable

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.)

The Layers

There are four layers of key settings on the keyboard. The layer 0 and layer 1 are for the Mac system. The layer 2 and layer 3 are for the Windows system.

If your system toggle is switched to Mac, then the layer 0 will be activated.

If your system toggle 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.

The Backlight

Press fn + Q to change the lighting effect

Press fn + tab to turn the lighting on/off

Adjust The Backlight Brightness

Press fn + W to increase the backlight brightness

Press fn +S to decrease the backlight brightness

Adjust The Backlight Speed

Press fn +T to increase the light effect speed

Press fn +G to decrease the light effect speed

Warranty

The keyboard is highly customizable and easy to be rebuilt. If anything goes wrong with any of the keyboard components of keyboard during the warranty period, we will only replace the defective parts of the keyboard, not the whole keyboard.

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.

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.

K2 PRO BLUETOOTH MECHANICAL KEYBOARD

SPECIFICATIONS

Number of keys: 84

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 K2 Pro

Operating Environment: -10 to 50°c Technical specifications can be subjected to change without notice we apologize for any inconvenience caused

OVERVIEW

Bluetooth indicator
Charging port
Battery indicator
Win/Android Mac/i0S (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.

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

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 battery is below 15%, a red battery blinking indicater 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 a 5V 2A adapter or USB 3.0 for the best performance. The Keychron K2 Pro can be charged in Bluetooth/on/off mode.

” This product supports up to 5V 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 Cable option (it only works when a USB cable is plugged in).
Connect our cable with your PC and keyboard. 3.Backlit will be turned on. *Under Wired Mode, keyboard will not enter into Battery Saver Mode.

BLUETOOTH MODE

Switch the keyboard to Bluetooth option.
Backlit will be turned on.
Hold “Fn+1” key for4 seconds to activate Bluetooth pairing (the Bluetooth indicator fast flashes for 3 minutes to detect pairing.
Search for the Bluetooth device “Keychron K2 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” “fn” + ‘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 button to switch among them.

OS SWITCH

MACROS

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, 71 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 key 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 keyboard to 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 a 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 meter.

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.