FKZ GMK104 Mechanical Keyboard Kit - Full Size Hot Swap Gasket

In this review the FKZ GMK104 mechanical keyboard kit stands out as a strong choice for tinkerers and productivity-focused typists who want a customizable, full size board with modern connectivity. The biggest reason to buy is its combination of a programmable 104-key layout with real-time VIA customization and a physical display and knob, which together make it simple to tailor lighting, macros and media controls without soldering or coding.

Key Features

• Smart screen & knob: The built-in display can be updated with images and the metal volume knob plus two multimedia buttons let users control media and toggle backlight or screen functions quickly.
• VIA software support: Open source VIA support provides a graphical interface for remapping the full 104 keys, creating macros and fine-tuning RGB effects without technical setup.
• Triple connectivity: Switch between Bluetooth 5.0, 2.4GHz wireless and USB-C wired mode to work across multiple devices and conserve battery when needed.
• Hot-swappable PCB: The gasket kit accepts 3-pin and 5-pin switches so users can try different mechanical switches without soldering.
• South-facing LEDs: The LED orientation is designed to improve backlight visibility from the typist's perspective and works well with keycap legends.
• Long battery life: A 4000mAh rechargeable battery supports extended wireless use and can be charged while typing with the detachable USB-C cable.

Who It's For

The GMK104 is ideal for DIY keyboard enthusiasts who want a ready-made barebones platform to customize with switches and keycaps, and for professionals who value a full 104-key layout with a numpad and programmable macros. The real-time VIA support and the physical display/knob make it appealing to users who want an immediate, tactile customization experience.

Those who should look elsewhere include people who want a fully assembled keyboard with preinstalled switches and keycaps out of the box or users who prioritize the absolute quietest laptop-style typing feel; this gasket-mounted, mechanical kit is tuned for custom builds and tactile options.

Pros & Cons

Pros

• Highly customizable with VIA software for remaps, macros and RGB control.
• Convenient triple-mode connectivity and a large rechargeable battery for mobile setups.
• Hot-swap PCB and south-facing LEDs simplify switch changes and lighting compatibility.
• Integrated screen and metal knob provide useful media and visual feedback.

Cons

• Sold as a barebone DIY kit, so buyers must supply switches and keycaps separately.
• Gasket mount and louder mechanical switches may not suit those seeking an ultra-quiet keyboard.

Specifications

Our Verdict

The FKZ GMK104 kit is a compelling option for users who want a fully programmable, full-size mechanical keyboard they can build and personalize. Its VIA support, smart display and versatile connectivity deliver strong value for DIY builders and power users, provided you are prepared to add your own switches and keycaps.

Frequently Asked Questions

Is the keyboard plug-and-play?
It is a barebone kit that requires switches and keycaps, but the hot-swappable PCB lets you install switches without soldering.

Can I use it with Mac and Windows?
Yes, the GMK104 is compatible with both Windows and Mac environments and retains common shortcuts.

How do I customize keys and lighting?
Use the VIA open source software for remapping, macros and RGB lighting customization in real time.