If you are just getting into PC gaming, the mechanical keyboard hobby can feel incredibly overwhelming. Between switch colors, mounting styles, and acoustic profiles, it often sounds like enthusiasts are speaking a completely different language.
This mechanical keyboard guide is designed to be your ultimate beginner glossary. By understanding terms like “Hot-Swappable,” “Actuation Force,” and “Gasket Mount,” you can confidently navigate the market and find the perfect keyboard for your gaming setup.
Before you spend your hard-earned money on a custom build or a premium gaming keyboard, here are the 10 most important terms you need to know.
1. PCB (Printed Circuit Board)
The PCB is the motherboard of your keyboard. It is the green or black fiberglass board that sits inside the plastic case. Every single switch is connected to the PCB. When you press a key, the PCB sends the electronic signal through the USB cable to your computer.
2. Hot-Swappable
This is the most important feature to look for in a modern keyboard. A “hot-swappable” PCB features special sockets that allow you to pull mechanical switches out and push new ones in using a simple pair of tweezers. If a keyboard is not hot-swappable, the switches are soldered directly to the PCB, meaning you cannot change them without melting the metal solder. (If you want to easily upgrade your board later, read our roundup of the 5 Best Mechanical Keyboards Under 50).
3. Switch Types (Linear, Tactile, Clicky)
The switch is the physical mechanism under the keycap. There are three main types:
- Linear (Red/Black): Smooth travel with no physical resistance. Best for competitive gaming.
- Tactile (Brown/Clear): Features a physical “bump” halfway down to confirm the keystroke. Best for typing accuracy.
- Clicky (Blue/Green): Features a bump and a loud, audible click. (For a deep dive into how these work, read our Ultimate Mechanical Keyboard Switches Guide).
4. Actuation Point & Force
When reading switch spec sheets, you will see these two numbers:
- Actuation Point: The exact distance (measured in millimeters) the key must travel down before the computer registers the input. Standard switches actuate at 2.0mm.
- Actuation Force: How hard you have to press the key (measured in grams). A 45g switch is very light and fast, while a 65g switch requires deliberate, heavy force.
5. Rapid Trigger (Magnetic Switches)
Traditional mechanical switches use metal contacts. Modern esports keyboards (like the Wooting 60HE) use magnetic Hall Effect switches. These switches feature “Rapid Trigger” technology, which allows the key to reset the exact millisecond you lift your finger. This allows for instantaneous counter-strafing in tactical shooters. (See this technology in action in our guide to the Best Keyboard for Valorant).
6. Keycap Profiles
The “profile” refers to the physical shape and height of the plastic keycaps.
- OEM Profile: The standard, sculpted shape found on most pre-built gaming keyboards.
- Cherry Profile: Slightly shorter than OEM, preferred by enthusiasts for comfort.
- XDA Profile: Flat, uniform keycaps where every row is exactly the same height. (Learn more about keycap materials like PBT and ABS in our Ultimate Guide to Custom Keycaps).
7. Gasket Mount
This refers to how the circuit board is attached to the keyboard case. In cheap keyboards, the board is screwed directly into the plastic case, resulting in a stiff feel and a hollow, echoing sound. In a “Gasket Mounted” keyboard, the circuit board is suspended between layers of soft foam or silicone. This provides a bouncy, comfortable typing feel and a premium acoustic sound.
8. Stabilizers (Stabs)
Stabilizers are the mechanisms placed under large keys (like the Spacebar, Enter, and Shift keys) to prevent them from wobbling or tilting when you press the edges. Cheap stabilizers will “rattle” loudly. Enthusiasts often lubricate their stabilizers or use the “Band-Aid Mod” to silence them. (Learn how to fix your spacebar in our guide: The 3 Best Clip-In Stabilizers for Custom Keyboards).
9. Layout Size (100%, TKL, 60%)
Keyboards come in different sizes, which drastically affects your mouse space.
- 100% (Full Size): Includes the number pad. Takes up the most desk space.
- TKL (Tenkeyless / 80%): Removes the number pad but keeps the F-row and arrow keys.
- 60%: Removes the number pad, F-row, and arrow keys. Provides the maximum amount of mouse space for low-sensitivity gaming. (See our top picks in our 5 Best 60% Keyboards for Gaming guide).
10. Thock vs. Clack
These are acoustic terms used to describe how a keyboard sounds.
- Thock: A deep, resonant, low-pitched bass sound. Often achieved using Nylon switch housings, thick PBT keycaps, and internal case foam. (Learn how to achieve this in our guide on How to Build a Creamy Keyboard).
- Clack: A higher-pitched, sharper sound, often associated with Polycarbonate switch housings and thin ABS keycaps.
Frequently Asked Questions
What is the most important feature for a gaming keyboard?
For competitive gaming, the most important feature is the switch type. You should prioritize fast, smooth linear switches or advanced magnetic Rapid Trigger switches to ensure your inputs are registered as quickly as possible.
Do I need to build a custom keyboard?
No. While building a custom keyboard is a fun hobby, many modern pre-built keyboards (from brands like Keychron, Epomaker, and Wooting) offer enthusiast-level features like hot-swappable PCBs and pre-lubed switches right out of the box.
