Introduction
Welcome to your Keychron K12 60% Mechanical Keyboard. This manual provides comprehensive instructions for setting up, operating, and maintaining your keyboard. The Keychron K12 is designed for versatility and performance, offering both Bluetooth wireless and USB wired connectivity, compatibility with Mac and Windows operating systems, and durable Keychron Mechanical Blue Switches within an aluminum frame.

An overhead view of the Keychron K12 60% mechanical keyboard, showcasing its compact layout and the distinct blue mechanical switch.
Package Contents
Please verify that all items are present in your package:
- Keychron K12 Mechanical Keyboard
- USB Type-C Cable
- Keycaps for Windows and macOS
- User Manual
Setup
1. Operating System Switch
Locate the OS toggle switch on the side of the keyboard. Slide it to the appropriate position for your device:
- Mac/iOS: For Apple devices.
- Windows/Android: For Windows or Android devices.
2. Connection Mode Switch
Locate the connection mode toggle switch on the side of the keyboard.

A side profile of the Keychron K12 keyboard, clearly showing the USB Type-C port, the Mac/Windows operating system toggle switch, and the Bluetooth/Off/Cable connection mode toggle switch.
Wired Mode
- Slide the connection mode switch to "Cable".
- Connect the provided USB Type-C cable to the keyboard and your computer.
Bluetooth Wireless Mode
- Slide the connection mode switch to "BT".
- Ensure Bluetooth is enabled on your device (computer, smartphone, or tablet).
- Press and hold Fn + 1 (or Fn + 2, Fn + 3) for 4 seconds until the corresponding key starts flashing rapidly. This indicates the keyboard is in pairing mode.
- On your device, search for "Keychron K12" in the Bluetooth settings and select it to connect.
- Once successfully connected, the key will stop flashing.
- To switch between up to three paired devices, briefly press Fn + 1, Fn + 2, or Fn + 3.

A partial view of the Keychron K12 keyboard, highlighting its ability to connect to up to three devices, including Mac and Windows systems.
3. Adjustable Feet
The Keychron K12 features two-level adjustable feet on the underside. Flip them out to achieve your preferred ergonomic typing angle for enhanced comfort during extended use.

A side view of the Keychron K12 keyboard with its adjustable feet extended, demonstrating the ergonomic 9-degree typing angle.
Operating Instructions
Function Keys and Multimedia Controls
Due to its compact 60% layout, the Keychron K12 utilizes the Fn key in combination with other keys to access standard function keys (F1-F12) and multimedia controls. Refer to the keycap legends for specific functions. For example, Fn + 1 through Fn + 3 are used for Bluetooth device switching.
Battery Management
The keyboard is equipped with a built-in 4000mAh Lithium Polymer battery for wireless operation.
- Charging: Connect the USB Type-C cable to the keyboard and a power source (e.g., computer USB port or USB wall adapter). The charging indicator light will illuminate to show charging status.
- Battery Life: The 4000mAh battery provides extended usage time in wireless mode.

A close-up of the Keychron K12 keyboard with text overlay indicating its 4000mAh battery capacity.
Key Features
The Keychron K12 keyboard offers a range of features designed for productivity and user experience:
- Compact 60% Layout: Features 61 keys, maximizing desk space while retaining essential functionality.
- Dual Connectivity: Seamlessly switch between Bluetooth 5.1 wireless and USB Type-C wired modes.
- Multi-Device Support: Connects with up to 3 devices and allows easy switching between them.
- Operating System Compatibility: Fully compatible with Mac, Windows, Android, and iOS devices.
- Keychron Mechanical Blue Switches: Provides a tactile and clicky typing experience with a durable lifespan of up to 50 million keystrokes.
- Aluminum Frame: Ensures robust build quality and stability.
- Ergonomic Design: Includes two-level adjustable feet for comfortable typing angles.
- Long-lasting Battery: Equipped with a 4000mAh battery for extended wireless usage.

An infographic summarizing the main features of the Keychron K12 keyboard, including its compact 60% layout, dual connectivity, operating system compatibility, mechanical switches, and ergonomic adjustable feet.
Specifications
| Feature | Specification |
|---|---|
| Model | K12L2 |
| Layout | 60% (61 keys) |
| Connectivity | Bluetooth 5.1, USB Type-C |
| Switches | Keychron Mechanical Blue Switch |
| Operating Force | 60±10gf |
| Pre-travel | 2±0.4mm |
| Travel Distance | 4±0.4mm |
| Behavior | Clicky |
| Sound Level | Clicky |
| Lifespan | Up to 50 million keystrokes |
| Battery | 4000mAh Lithium Polymer |
| Frame Material | Aluminum |
| Item Weight | 2.23 pounds |
| Compatible OS | Mac, Windows, Android, iOS |

A detailed graphic outlining the specifications of the Keychron Mechanical Blue Switch, including operating force, pre-travel, travel distance, behavior, sound level, and lifespan.
Troubleshooting
If you encounter issues with your Keychron K12 keyboard, please refer to the following common troubleshooting steps:
- Keyboard not connecting via Bluetooth:
- Ensure the keyboard's connection mode switch is set to "BT".
- Verify the keyboard is in pairing mode (the selected Fn + 1/2/3 key is flashing rapidly).
- Check that Bluetooth is enabled on your host device.
- Try removing "Keychron K12" from your device's Bluetooth list and re-pairing.
- Ensure the keyboard battery is sufficiently charged.
- Keys not responding in wired mode:
- Ensure the keyboard's connection mode switch is set to "Cable".
- Check the USB Type-C cable connection at both the keyboard and your computer.
- Try using a different USB port on your computer or a different USB Type-C cable.
- Incorrect key functions (Mac/Windows):
- Verify that the OS toggle switch on the side of the keyboard is set to the correct operating system (Mac/iOS or Windows/Android).
- Battery not charging:
- Ensure the USB Type-C cable is properly connected to both the keyboard and the power source.
- Try using a different USB port or a different power adapter.
Maintenance
Proper maintenance will help extend the lifespan of your Keychron K12 keyboard:
- Cleaning:
- Use a soft, dry, lint-free cloth to gently wipe the keyboard surface.
- For deeper cleaning, carefully remove the keycaps (using a keycap puller if available) and use compressed air to clear dust and debris from between the switches.
- Avoid using liquid cleaners directly on the switches or electronic components.
- Storage:
- Store the keyboard in a cool, dry place away from direct sunlight, excessive heat, or extreme cold.
- Protect the keyboard from spills and impacts.
Warranty and Support
For detailed warranty information, technical support, and frequently asked questions, please visit the official Keychron website (www.keychron.com) or contact your authorized retailer. Please retain your proof of purchase for any warranty claims.





