Keychron K7M-A3
Keychron K7 Max QMK/VIA Ultra-slim Wireless Mechanical Keyboard User Manual
Model: K7M-A3
Introduction
Welcome to the user manual for your Keychron K7 Max QMK/VIA Ultra-slim Wireless Mechanical Keyboard. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your keyboard.
The Keychron K7 Max is a versatile 65% layout mechanical keyboard designed for efficiency and responsiveness, supporting 2.4 GHz, Bluetooth, and wired connections. It features QMK/VIA customization for personalized key remapping and macros, and is compatible with macOS, Windows, and Linux systems.
Product Overview
The Keychron K7 Max features an ultra-slim design with low-profile Gateron mechanical switches, offering a distinct tactile response. Its compact 65% layout includes 68 keys, providing essential functionality while saving desk space.

The Keychron K7 Max keyboard, showcasing its compact 65% layout and a detached low-profile Gateron brown switch.

The Keychron K7 Max keyboard positioned on a wooden desk, surrounded by common office accessories, highlighting its sleek design in a typical workspace.
Package Contents
Please ensure all items are present in your package:
- Keychron K7 Max Keyboard
- USB-C Cable
- User Manual (this document)
- Keycap Puller (if included)
- Switch Puller (if hot-swappable version)
Note: Specific accessories may vary based on the purchased model variant.
Setup
Initial Charging
Before first use, it is recommended to fully charge the keyboard. Connect the provided USB-C cable to the keyboard's USB-C port and the other end to a powered USB port (e.g., computer, wall adapter). The LED indicator will show charging status.
Connectivity Modes
The Keychron K7 Max supports three connectivity modes: 2.4 GHz wireless, Bluetooth 5.1, and wired USB-C.

Side view of the keyboard showing the physical switches for mode selection (G/Cable/BT) and operating system (Win/Android Mac/iOS).
2.4 GHz Wireless Connection
- Locate the 2.4 GHz receiver (dongle) in the keyboard's packaging.
- Plug the 2.4 GHz receiver into an available USB port on your computer.
- On the keyboard's side, slide the mode switch to the "2.4G" position.
- The keyboard should automatically connect. If not, press Fn + 4 to initiate pairing.
Bluetooth Connection
- On the keyboard's side, slide the mode switch to the "BT" position.
- To enter pairing mode, press and hold Fn + 1 (for Bluetooth device 1), Fn + 2 (for Bluetooth device 2), or Fn + 3 (for Bluetooth device 3) for 4 seconds until the indicator light flashes rapidly.
- On your device (computer, tablet, smartphone), open Bluetooth settings and search for "Keychron K7 Max".
- Select the keyboard to pair. The indicator light will stop flashing once connected.
- To switch between paired Bluetooth devices, press Fn + 1, Fn + 2, or Fn + 3.
Wired USB-C Connection
- Connect the provided USB-C cable from the keyboard to your computer's USB port.
- On the keyboard's side, slide the mode switch to the "Cable" position.
- The keyboard will be recognized as a standard USB keyboard.
Operating System Switch
The keyboard has a physical switch on the side to select between Windows/Android and Mac/iOS layouts. Ensure this switch is set correctly for your operating system to ensure proper function key mapping.
- Win/Android: For Windows PCs and Android devices.
- Mac/iOS: For Apple macOS computers and iOS devices.
Operating the Keyboard
Key Functions
The Keychron K7 Max features a 65% layout with 68 keys.

A clear top-down view of the Keychron K7 Max keyboard, illustrating its 65% layout and keycap design.
Standard alphanumeric keys function as expected. The keyboard also includes multimedia keys and function keys accessible via the Fn key.
- Fn + F1-F12: Access multimedia functions (e.g., volume control, media playback).
- Fn + Light Key: Cycle through backlight effects.
- Fn + Arrow Keys: Adjust backlight brightness and speed.
QMK/VIA Customization
The Keychron K7 Max supports QMK/VIA firmware, allowing for advanced key remapping, macro creation, and custom lighting effects.
- Download the VIA software or use the Keychron Launcher web application from the official Keychron website.
- Connect the keyboard to your computer via USB-C cable.
- Launch the VIA software/web app. It should automatically detect your keyboard.
- Follow the on-screen instructions to customize key assignments, create macros, and configure lighting.
For detailed instructions on using QMK/VIA, please refer to the Keychron official documentation or community guides.
Backlight Control
The keyboard features a white LED backlight.
- Press Fn + Light Key (usually the key with a lightbulb icon) to cycle through different backlight effects.
- Use Fn + Up Arrow and Fn + Down Arrow to adjust backlight brightness.
- Use Fn + Left Arrow and Fn + Right Arrow to adjust backlight effect speed.
Maintenance
Cleaning the Keyboard
- Disconnect the keyboard from all power sources before cleaning.
- Use a can of compressed air to remove dust and debris from between the keycaps.
- For surface cleaning, gently wipe the keycaps and frame with a soft, lint-free cloth slightly dampened with water or a mild, non-abrasive cleaning solution.
- Avoid spraying liquids directly onto the keyboard.
Battery Care
The Keychron K7 Max is equipped with a 1550 mAh rechargeable Li-polymer battery.
- Avoid exposing the keyboard to extreme temperatures (hot or cold).
- For long-term storage, charge the battery to about 50% and store in a cool, dry place.
- If the battery life significantly decreases, it may indicate the battery needs replacement. Contact Keychron support for assistance.
Troubleshooting
- Keyboard not responding
- Ensure the keyboard is charged.
- Check the connectivity mode switch (2.4G/BT/Cable) and ensure it matches your connection method.
- For wireless connections, ensure the receiver is properly plugged in (2.4G) or Bluetooth is paired correctly.
- Try connecting via USB-C cable to rule out wireless issues.
- Restart your computer/device.
- Bluetooth connection issues
- Ensure the keyboard is in Bluetooth mode and pairing mode (Fn + 1/2/3 for 4 seconds).
- Remove "Keychron K7 Max" from your device's Bluetooth list and re-pair.
- Ensure your device's Bluetooth is enabled and discoverable.
- Try pairing with a different device to isolate the issue.
- Keys not registering or double-typing
- Clean under the affected keycap using compressed air.
- If the keyboard is hot-swappable (though this model is listed as "Non" hot-swappable in description), try reseating the switch or replacing it.
- Ensure firmware is up to date (check Keychron website).
- Backlight not working
- Ensure the backlight is not turned off (Fn + Light Key).
- Adjust brightness using Fn + Up/Down Arrow keys.
- Ensure the keyboard has sufficient battery charge.
Specifications
| Feature | Detail |
|---|---|
| Model | K7M-A3 |
| Layout | 65% (68 Keys), QWERTY ANSI US |
| Switches | Gateron Low-Profile Mechanical (Brown) |
| Hot-Swappable | No |
| Keycap Material | Double-shot PBT Low-Profile |
| Frame Material | ABS + Aluminum Frame |
| Backlight | White LED |
| Connectivity | 2.4 GHz Wireless, Bluetooth 5.1, USB-C Wired |
| Polling Rate (2.4 GHz & Wired) | 1000Hz |
| Polling Rate (Bluetooth) | 90Hz |
| N-Key Rollover (NKRO) | Yes (Wireless & Wired Modes) |
| Battery | 1550 mAh Li-polymer |
| Wireless Operating Time (Backlight Off) | Up to 110 hours |
| Compatible Systems | macOS / Windows / Linux |
| Dimensions (L x W) | 306 x 97.5 mm (12.04 x 3.83 inches) |
| Weight | 436 g (0.96 lbs) |
| Typing Angle | 3.37°, 4.4°, and 7.39° |
| MCU | ARM Cortex-M4 32-bit STM32F402 (256KB Flash) |

Dimensional diagram of the Keychron K7 Max keyboard and its low-profile switch, illustrating key measurements.

Side profile of the Keychron K7 Max, demonstrating the adjustable typing angles provided by its feet.
Warranty and Support
For warranty information, technical support, and frequently asked questions, please visit the official Keychron website.
Website: www.keychron.com
Please retain your proof of purchase for warranty claims.
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