1. Introduction
The ZMX GMK104 is a full-size mechanical keyboard kit designed for customization and versatile use. It features a gasket-mounted PCB, hot-swappable switch sockets, and tri-mode connectivity (Bluetooth 5.0, 2.4GHz wireless, and USB-C wired). The keyboard also includes a multifunctional screen and a volume knob for enhanced user interaction. This manual provides instructions for setting up, operating, and maintaining your GMK104 keyboard kit.
2. Package Contents
Ensure all items are present before proceeding with setup.
- GMK104 Barebones Keyboard Kit
- Keycap Puller
- USB Cable (Type-C)
- 2.4G Receiver
3. Setup Guide
3.1. Physical Assembly
The GMK104 is a barebones kit, meaning switches and keycaps are not pre-installed. Follow these steps to assemble your keyboard:
- Carefully insert your preferred 3-pin or 5-pin mechanical switches into the hot-swappable sockets on the PCB. Ensure the pins are straight to avoid bending.
- Place your chosen keycaps onto the switches. Use the provided keycap puller if needed for removal or adjustment.
Image: The ZMX GMK104 barebones keyboard kit, showcasing its internal structure and hot-swappable sockets.
Image: Exploded view illustrating the gasket mount structure and various layers of the GMK104 keyboard kit.
3.2. Connectivity Options
The GMK104 supports three connection modes:
- USB-C Wired: Connect the keyboard directly to your device using the provided USB-C cable. This mode also charges the keyboard.
- 2.4GHz Wireless: Insert the 2.4G receiver into a USB port on your device. Switch the keyboard's mode selector to 2.4G.
- Bluetooth 5.0: Switch the keyboard's mode selector to BT. Press FN+Q/W/E to select one of three Bluetooth channels. Pair with your device via Bluetooth settings.
Image: Diagram illustrating the three connectivity modes: 2.4GHz wireless, USB-C wired, and Bluetooth 5.0.
3.3. Initial Power On
After connecting, the keyboard will power on. The integrated screen will display connection status, time, and battery level. Ensure the keyboard is charged for optimal wireless performance.
Video: An overview of the ZMX GMK104 Full Size VIA Mechanical Keyboard Kit, demonstrating its features and design.
4. Operating Instructions
4.1. Multifunctional Screen and Volume Knob
The GMK104 features a smart display and a metal knob. The display shows real-time information such as connection mode, battery status, and time. The two multimedia buttons to the left of the screen control backlight and screen on/off functions. The metal knob controls volume.
Image: Detailed view of the keyboard's screen and knob, showing its interactive interface.
Video: Demonstration of the ZMX GMK104 RGB Gaming Keyboard Kit, highlighting the screen and knob functionalities.
4.2. Key Functions
- FN + (F1-F12): Activates multimedia and function keys.
- FN + |: Switches RGB backlight effects.
- NKRO (N-Key Rollover): All 104 keys are registered simultaneously, preventing ghosting or missed key presses during rapid typing or gaming.
4.3. VIA Software Programming
The GMK104 is VIA programmable, allowing extensive customization of key assignments, macros, and lighting effects. To use VIA software:
- Ensure the keyboard is connected via USB-C wired mode and set to Windows mode (if applicable).
- Download the VIA software from the official WestBerry VIA GitHub page or the ZMX/BOYI official website.
- Download the specific GMK104 JSON file from the ZMX/BOYI official website.
- Open VIA software, go to the 'Settings' tab, and enable 'Show Design tab'.
- In the 'Design' tab, click 'Load' and upload the GMK104 JSON file.
- Once loaded, the keyboard layout will appear. You can now remap keys, create macros, and adjust lighting settings.
Image: VIA software interface for customizing key functions and lighting on the GMK104 keyboard.
Video: A step-by-step guide on how to download and use the GMK104 keyboard driver and VIA software for customization.
5. Maintenance
Proper maintenance ensures the longevity and performance of your GMK104 keyboard kit.
- Cleaning: Regularly clean the keyboard with a soft, dry cloth. For deeper cleaning, remove keycaps using the provided keycap puller and use compressed air to clear debris.
- Switch Replacement: Due to the hot-swappable design, switches can be replaced without soldering. Use a switch puller to gently remove switches and insert new ones, ensuring pins align correctly.
- Keycap Care: Clean keycaps with mild soap and water if necessary, ensuring they are completely dry before reattaching.
- Battery: The keyboard contains a 4000mAh rechargeable battery. Charge it via the USB-C cable when the battery indicator on the screen is low.
6. Troubleshooting
If you encounter issues with your GMK104 keyboard, refer to the following common solutions:
- Keyboard Not Responding:
- Check the connection mode switch (2.4G, USB, BT) on the side of the keyboard.
- For wired mode, ensure the USB-C cable is securely connected to both the keyboard and your device. Try a different USB port or cable.
- For 2.4GHz wireless, ensure the receiver is properly inserted and the keyboard is in 2.4G mode.
- For Bluetooth, ensure the keyboard is in BT mode, paired correctly, and selected on the correct channel (FN+Q/W/E).
- Check battery level on the screen; recharge if low.
- Keys Not Registering / Double Typing:
- This can sometimes be caused by loose switches. Gently press down on the affected switch to ensure it is fully seated in the hot-swap socket.
- If the issue persists, try replacing the switch with a known working one.
- Ensure the keyboard firmware is up to date (check the ZMX/BOYI official website).
- VIA Software Not Detecting Keyboard:
- Ensure the keyboard is connected via USB-C wired mode and the mode switch is set to USB.
- Verify that the correct GMK104 JSON file has been loaded into the VIA software.
- Try re-inserting the USB cable.
- Restart the VIA software and/or your computer.
- RGB Backlight Issues:
- Press FN + | to cycle through different lighting effects.
- Adjust brightness using dedicated keys or VIA software.
- Ensure the keyboard is not in a low power state.
7. Specifications
| Feature | Detail |
|---|---|
| Model | GMK104 |
| Dimensions | 15"L x 4"W x 1"H (38.1 x 10.16 x 2.54 cm) |
| Weight | 2 pounds (0.91 kg) |
| Connectivity | 2.4Ghz, Bluetooth 5.0, USB-C Wired |
| Battery Capacity | 4000mAh (1 A battery included) |
| Key Layout | 104 Keys Full Size with Numpad |
| Switch Compatibility | 3-pin or 5-pin Hot-Swappable |
| Backlighting | South-Facing RGB |
| Special Features | Multifunctional Screen & Knob, VIA Programmable, Gasket Mount |
| Compatible Devices | PC, Laptop, Gaming Console, Smartphone, Tablet (Windows/macOS) |
8. Warranty Information
Please refer to the product packaging or the official ZMX website for detailed warranty terms and conditions. Typically, ZMX products come with a limited warranty covering manufacturing defects from the date of purchase.
9. Customer Support
For further assistance, technical support, or inquiries, please visit the official ZMX Store on Amazon or their official website:
- ZMX Store: https://www.amazon.com/stores/ZMX/page/50A080E9-D8F1-4E44-867B-455015CB80A2
- Official Website: Refer to the product packaging or search online for 'ZMX Keyboard Official Website' for the most up-to-date contact information and resources.