Introduction
This manual provides detailed instructions for the Keychron K4 Bluetooth Wireless Mechanical Keyboard. The K4 features a 96% layout with 100 keys, an aluminum frame, and hot-swappable Gateron Brown switches, offering a tactile typing experience. It supports both Bluetooth wireless and USB Type-C wired connectivity, and is compatible with Mac and Windows operating systems.
Image: Keychron K4 Mechanical Keyboard with Hot-swappable Brown Switches.
Image: Keychron K4 Mechanical Keyboard highlighting its features, including 96% layout, wireless/wired, aluminum body, Gateron switches, Mac & Windows compatibility, RGB, 3-device connectivity, and Type-C plug.
Setup
Connectivity
The Keychron K4 keyboard offers versatile connectivity options:
- Bluetooth Wireless: Connects with up to 3 devices simultaneously. Easily switch between paired devices. Features a reliable Broadcom Bluetooth chipset.
- USB Type-C Wired: Connect to a single device using the included USB Type-C cable.
Image: Keychron K4 keyboard showing wireless and wired connectivity options with a monitor and mouse, illustrating its dual-mode functionality.
Image: Diagram showing wireless and wired modes for the Keychron K4 keyboard, emphasizing its ability to connect to up to 3 devices via Bluetooth or a single device via USB Type-C.
Operating System Switch
The K4 is designed for compatibility with both Mac and Windows. Use the dedicated switch on the side of the keyboard to select your operating system. Extra keycaps for both systems are included for customization.
Image: Keychron K4 keyboard compatible with both Mac and Windows operating systems, shown with respective computer screens to highlight its cross-platform functionality.
Image: Keychron K4 keyboard shown with a MacBook and an iPhone, illustrating its broad compatibility with various devices, including macOS and iOS.
Video: A review of the Keychron K4 Wireless Keyboard, demonstrating its features and connectivity options for different operating systems.
Operating
RGB Backlighting
The K4 features enchanting RGB backlighting with over 15 types of flashing light modes, including a static white light mode. These can be cycled through using the dedicated light bulb key on the keyboard.
Image: Close-up of Keychron K4 keyboard keys with RGB backlighting, showing various color effects and modern keycap legends.
Image: Keychron K4 keyboard showcasing its 15+ RGB lighting modes, highlighting the variety of backlight options available.
Video: A demonstration of the Keychron K4 wireless mechanical keyboard's RGB lighting effects and wired connectivity option.
Key Functions
The K4 supports N-key rollover (NKRO) in wired mode and 6-key rollover (6KRO) in wireless mode, ensuring all key presses are registered accurately. The Gateron Brown switches provide a tactile response suitable for both typing and light gaming.
Maintenance
Hot-Swappable Switches
The hot-swappable version of the K4 allows you to easily change every switch without soldering, enabling personalization of your typing experience. This feature also simplifies switch replacement if needed.
Image: Diagram illustrating the hot-swappable switch feature of the Keychron K4 keyboard, showing different switch types (Brown, Red, Blue) and the PCB for easy replacement.
Image: Gateron G Pro Mechanical Switch features table, detailing specifications for Red (Linear, Quiet), Blue (Clicky, Typist), and Brown (Tactile, Gentle) switches, including operating force, pre-travel, travel distance, and pre-lubed status.
Cleaning
To maintain optimal performance, regularly clean your keyboard. Use a soft brush or compressed air to remove dust and debris from between the keycaps. For deeper cleaning, keycaps can be carefully removed.
Troubleshooting
Battery Life
The K4 is equipped with a 4000 mAh battery, providing up to 72 hours of typing or 7 days of normal use (8 hours/day). If you experience shorter battery life, ensure the keyboard is fully charged and consider adjusting RGB lighting brightness or patterns, as these can affect power consumption.
Image: Keychron K4 keyboard on a desk, emphasizing its 4000 mAh battery capacity and compact design with number pads, alongside a book and a mouse.
Connectivity Issues
If you encounter issues with Bluetooth connectivity, ensure the keyboard is within range of your device and that Bluetooth is enabled on both devices. Try re-pairing the keyboard. For wired connection problems, ensure the USB Type-C cable is securely connected to both the keyboard and your computer.
Specifications
- Model Number: HS-K4J
- Layout: 96% (100-key)
- Switches: Gateron Brown (Hot-swappable)
- Connectivity: Bluetooth, USB Type-C
- Backlighting: RGB (15+ types)
- Frame Material: Aluminum
- Battery: 4000 mAh
- Battery Life: Up to 72 hours (typing), 7 days (normal use)
- Key Rollover: NKRO (wired), 6KRO (wireless)
- Compatible Devices: Laptop, Smartphone
- Compatible OS: Mac, Windows
- Item Weight: 3.14 pounds
- Package Dimensions: 15.71 x 6.61 x 2.05 inches
Image: Side view of Keychron K4 keyboard showing adjustable feet at 6 and 9 degrees for ergonomic typing, and OEM profile curved keycaps.
What's in the Box
- Keychron K4 Bluetooth Wireless Mechanical Keyboard
- USB Type-C Cable
- Keycap Puller
- Switch Puller (for hot-swappable versions)
- Extra Keycaps for Mac and Windows
Warranty and Support
For warranty information and technical support, please refer to the official Keychron website or contact Keychron customer service directly. Keep your purchase receipt for warranty claims.
