Keychron Q4 Wired Custom Mechanical Keyboard User Manual

Introduction

The Keychron Q4 is a fully customizable mechanical keyboard featuring a compact 60% layout and a solid full aluminum frame. Designed for personalized typing comfort, it supports QMK/VIA for extensive programmability and hot-swappable switches for easy customization. This manual provides essential information for setting up, operating, and maintaining your Keychron Q4 keyboard.

Package Contents

Upon unboxing your Keychron Q4, please verify that all components are present:

• 1x Fully Assembled Keyboard (including Aluminum Case, Steel Plate, Sound Absorbing Foam, Case Foam, PCB, 12x Gaskets (8 installed, 4 in box), 5 sets x Stabilizers, 1 set x Keycaps (Double-Shot PBT), 1 set x Switches (Gateron G Pro Blue Switch))
• 1x Type-C to Type-C Cable
• 1x Type-A to Type-C Adapter
• 1x Switch Puller
• 1x Keycap Puller
• 1x Screwdriver
• 1x Hex Key

Note: All tools are located on the bottom of the box.

Image: Diagram showing the Keychron Q4 keyboard and its included accessories such as cables, switch puller, keycap puller, screwdriver, and hex key.

Setup

1. Connecting the Keyboard

The Keychron Q4 is a wired keyboard. Connect the provided USB-C to USB-C cable to the keyboard's USB-C port and to your computer. If your computer only has USB-A ports, use the included USB-A to USB-C adapter.

Image: Keychron Q4 keyboard connected via a USB-C cable to a desktop computer setup, showing the compact layout on a desk.

2. Operating System Switch

The Keychron Q4 supports both macOS and Windows operating systems. Locate the OS switch on the back or side of the keyboard and set it to the appropriate position for your computer's operating system.

Image: Close-up of the Keychron Q4 keyboard's side, showing a toggle switch labeled "Win" and "Mac" for selecting the operating system layout.

Operating the Keyboard

1. QMK/VIA Programmability

The Keychron Q4 is fully compatible with QMK and VIA software, allowing you to program and remap each key, create macros, and customize lighting effects. To use VIA:

1. Connect the Q4 to your device using the provided cable.
2. Download and install the VIA software from the official Keychron website or the VIA website.
3. Import the Q4 keymap JSON file into the VIA software. This file is typically available on the Keychron product page or support section.
4. Use the drag-and-drop interface within VIA to remap keys or assign macro commands for macOS, Windows, or Linux operating systems.

Image: Screenshot of the VIA software interface displaying the Keychron Q4 keymap, showing options for configuring keys, macros, and lighting across multiple layers.

2. RGB Backlighting

The Q4 features south-facing RGB LEDs, designed to enhance backlight visibility from the typist's perspective, especially with non-shine-through PBT keycaps. Lighting effects can be customized via the VIA software.

Image: Close-up of the Keychron Q4 keyboard showing the south-facing RGB LED lights illuminating the switches beneath the keycaps with a purple glow.

3. Volume Knob

The oversized aluminum volume knob provides a tactile method for controlling audio volume without needing to interact with your mouse or operating system settings.

Maintenance

1. Hot-Swappable Switches

The Keychron Q4 features hot-swappable sockets, allowing you to easily change mechanical switches without soldering. It supports almost all 3-pin and 5-pin MX style mechanical switches (e.g., Cherry, Gateron, Kailh, Panda).

1. Use the provided switch puller to carefully remove the existing switch.
2. Align the pins of the new switch with the holes on the PCB.
3. Gently press the new switch into place until it clicks securely. Ensure pins are not bent.

Image: Close-up of the Keychron Q4 keyboard showing several keycaps removed, revealing different colored Gateron G Pro switches and empty hot-swap sockets, demonstrating the hot-swappable feature.

2. Keycap Removal and Cleaning

The included keycap puller allows for easy removal of keycaps for cleaning or replacement. The PBT keycaps are designed for oil resistance and durability.

1. Use the keycap puller to gently grip and lift keycaps off the switches.
2. Clean keycaps with a mild soap solution and a soft cloth, then dry thoroughly.
3. To reattach, align the keycap stem with the switch stem and press down firmly.

Troubleshooting

• Keyboard not responding: Ensure the USB-C cable is securely connected to both the keyboard and the computer. Verify the OS switch is set correctly.
• Keys not registering: If individual keys are not working, carefully remove the keycap and switch using the provided tools. Re-insert the switch, ensuring the pins are straight and fully seated in the hot-swap socket.
• RGB lighting issues: Check VIA software for lighting settings. Ensure the keyboard firmware is up to date.
• Wobbly "big keys": The PCB-mounted screw-in stabilizers are designed to reduce wobbliness. If issues persist, ensure stabilizers are properly seated and lubricated.

Specifications

Warranty and Support

For warranty information, technical support, or further assistance, please visit the official Keychron website or contact Keychron customer service. Keep your purchase receipt for warranty claims.

You can find additional resources and community support through the Keychron store link: Keychron Store.

Product Videos