Hot Swap Keyboard PCB Guidelines

Traditional PCBA boards rely on the soldering process to securely attach components to the surface of the circuit board. While this method offers high reliability, it may not be ideal for circuit boards that require frequent replacement or maintenance. Repeated desoldering PCB components can lead to issues such as damaged pads, components, and traces. To address these challenges, hot-swap technology is applied to PCB.

With hot-swap technology, users have the ability to insert or remove specific components or modules while the equipment is operational, without the need to power off or restart the system. As this technology has gained popularity, hot swap PCB has become prevalent in applications like mechanical keyboards, network equipment, and storage systems.

hotswap pcb

What is Hot Swap PCB?

A Hot Swap or Hot Swappable PCB is a specialized circuit board designed to accommodate removable and replaceable components, such as mechanical switches, LEDs, or stabilizers, without the need for soldering. The implementation of hot-swap functionality involves designers incorporating specific connectors or slots into the circuit layout. These connectors and slots serve the purpose of securing components and facilitating their easy removal.

The mechanism behind hot swapping relies on several key components and clever design to achieve its purpose:

  • Sockets: These are pivotal for securing the components and contain a contact mechanism inside to firmly hold the switch in place.
  • Electrical Contacts: These contacts are used to connect with component pins, establishing electrical connections. Electrical signals can be transmitted when the user interacts with the switch.
  • Retention Mechanism: Components like clips are used to prevent unintentional disassembly during use or falling off due to mechanical impact.
  • Compatibility: Hot-swap PCB design is compatible with various types of key switches, with board-mount and PCB-mount switches being the most common choices.

In the table below, FS Technology offers a detailed comparison between hot-swap and soldered PCB to enhance your understanding of the hot swap PCB concept:

Hot swap PCB

Soldering PCB

Component attachments

Components are connected using dedicated sockets or connectors. This means you can insert and remove components much like USB plug-and-play devices. This approach accelerates component installation and eliminates the need for operators to possess soldering skills.

This process entails inserting the component pins into the designated holes on the PCB and then using a high-temperature soldering iron or other soldering techniques to heat the solder. After cooling, the component is securely affixed to the board. 

Customization and Maintenance

It exists because of its high customizability and user-friendliness, relatively simple maintenance and upgrades, and has been widely praised in the field of keyboard enthusiasts.

Although less flexible, it creates a permanent connection with higher robustness and is most widely used in commercial activities.


For users who enjoy custom projects can make changes quickly and easily.

PCB assembly process and soldering process is a laborious process, any mistake will lead to failure.


The scope of application is wider without requiring the user to have more skills.

In addition to professional equipment, it is also necessary to understand various precautions and proceed with caution.

Hot Swap Keyboard PCB Key Switch

The initial motivation behind enthusiasts exploring hot-swap technology is keyboard PCB customization, where compatibility plays a crucial role. Compatibility is determined by the outline size and pin configuration of the key switch. Brands offering key switches compatible with hot swap PCB keyboard include Cherry MX, Gateron, Kailh, and others.

When choosing a key switch, consider several questions based on your specific needs: Is the customization aimed at enhancing your gaming experience or improving office productivity? Do you prefer a quiet typing experience or the audible satisfaction of a click sound? Are you looking for strong tactile feedback that provides a noticeable bump when pressing a key, or do you prefer a smoother keystroke experience? Taking these aspects into account, here’s a comparison of several key switch types:

  • Tactile Switches: These switches provide feedback in the form of a noticeable bump when you press a key. They are favored by typists and programmers who appreciate tactile feedback. Examples include Zealios and Kailh Box Brown.
  • Clicky Switches: Offer tactile feedback along with an audible click sound when the actuation point is reached. Users who enjoy the audible feedback tend to prefer these switches. Examples include Cherry MX Blue and Razer Green.
  • Linear Switches: Lack the tactile bump and audible click, offering a smooth, uninterrupted keypress experience. They are often favored by gamers and those who seek consistency in their keystrokes. Examples include Cherry MX Red, Gateron Red, and Kailh Box Red.
  • Hybrid Switches: Some switches combine characteristics of both tactile and clicky switches, providing a compromise between the two. For instance, SteelSeries OmniPoint switches allow users to adjust the actuation point to their preference, offering a customizable experience.
  • Specialty Switches: Specialty switches are designed for specific use cases. For example, switches like Cherry MX Silent or Gateron Silent are crafted to reduce the noise of keypresses, making them suitable for quiet environments.

Hotswap PCB in Gaming

A typical hotswap keyboard PCB comprises several key components: Printed Circuit Board that provides component support and connections; Socket for inserting and removing the key switch; Microcontroller that manages key presses and programming functions; LED, stabilizer and more customized function options. Highly functional and customizable hot-swap circuit boards can significantly enhance a gamer’s experience in various ways:

  • Customization: Gamers can effortlessly swap out key switches to find the switch type that best suits their gaming style. For instance, FPS gamers may prefer linear switches for rapid keypresses, while MOBA players might opt for tactile switches to prevent accidental keypresses.
  • Quick Replacements: In the midst of intense gaming sessions, a malfunctioning or worn-out key switch can be replaced within seconds, without the need for soldering, minimizing downtime.
  • Experimentation: Gamers have the freedom to experiment with different key switches, seeking the most comfortable and responsive options. This experimentation can lead to improved gaming performance and reduced finger fatigue during extended gameplay.
  • Evolving Preferences: As a gamer’s preferences change over time or with different games, they can adapt their keyboard’s feel and response accordingly, without the need to purchase a new keyboard.
  • Reduced Maintenance: Hotswap PCB simplify keyboard maintenance. Cleaning or replacing a switch is a straightforward process that does not require advanced technical skills.

For gamers seeking the best hot swappable PCB, several keyboard options cater to different preferences. Some recommended choices include the Ducky One 2 Mini, known for its portability and customization; the Keychron K6/K8 wireless keyboards, offering versatility; the Glorious Modular Mechanical Keyboard (GMMK), known for its modularity and RGB lighting; and the Drop ALT/CTRL keyboards, featuring premium build quality and customization features.


Hot swap PCB provides keyboard enthusiasts and gamers with a versatile and user-friendly means to customize their keyboards and switch key switches effortlessly. Their advantages, such as ease of maintenance and a wide array of key switch options, have made them a popular choice within the keyboard community. As technology continues to advance, hot-swappable technology is poised to play a significant role in the future of keyboard customization. Whether you’re a seasoned enthusiast or a newcomer, hot-swappable offer an accessible and enjoyable avenue to tailor your keyboard to your preferences.

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