Mechanical Keyboards Explained: Switches, Hot-Swap, Gasket Mount and Keycaps

A mechanical keyboard is really five choices. Pick a switch feel, decide on hot-swap, weigh gasket mount, choose keycap plastic, and settle on a layout. Each term describes one simple decision about how the board feels, sounds or is built. Get them right and you buy with confidence.

Why mechanical at all?

Basic boards use a single rubber membrane under every key. That feels mushy and vague. A mechanical board puts an individual spring-loaded switch under each key. Every press turns crisp, consistent and satisfying. Switches last far longer and can be customised. That per-key switch is the whole reason these boards feel and sound better. It is also where the choices begin.

Switches: the feel of every keystroke

Switches come in three broad families, usually colour-coded. Linear switches, often red, press down smoothly with no bump, which many gamers and fast typists prefer. Tactile switches, often brown, add a small bump partway down so you feel a key register. Clicky switches, often blue, pile a loud click on top of that bump, satisfying but noisy in a shared room. No switch is best. Only the feel you prefer counts. Try a few before committing if you can.

Hot-swap: change switches with no soldering

Traditionally, switches were soldered into the board. Changing them meant a soldering iron and some skill. A hot-swappable board uses little sockets instead. Pull a switch out by hand and push a new one in. This matters a lot. You are never locked into your first choice. You can try different switches over time and replace a faulty one instantly. New to the hobby? Hot-swap lets your keyboard evolve with your taste, which is much of the appeal of a board like the RK Royal Kludge R98 Pro.

Gasket mount: why boards feel soft or hard

How the switches are held changes the whole feel. In a basic board, the plate is screwed rigidly to the case, giving a firmer, sometimes harsh keystroke. In a gasket-mounted board, the plate rests on soft gaskets. It flexes slightly with each press, giving a cushioned, bouncy feel and often a deeper, softer sound. Gasket mount is one of the most sought-after upgrades, because it makes typing genuinely more comfortable.

Keycaps: ABS versus PBT, and profiles

The caps you touch are plastic, and the type matters. ABS keycaps feel fine at first but develop a greasy shine over months. PBT keycaps last longer, keep a pleasant matte texture and resist that shine, which is why enthusiasts prefer them. You will also see profiles like OEM, Cherry or MDA, which describe cap height and sculpt. Profile is down to comfort. PBT versus ABS is a real quality difference worth seeking.

Layout: how many keys and how much desk

Finally, size. A full-size board includes a number pad. TKL, or tenkeyless, drops the numpad to save space. Compact layouts like 75 percent and 65 percent shrink further by packing keys together or cutting some. A 96 percent layout is a clever middle ground. It keeps the numpad and arrows but packs them tightly, giving full function in a smaller footprint. Choose by whether you need a numpad and how much desk you want back.

The bottom line

A mechanical keyboard is really five choices. Pick the switch feel you like. Decide whether you want hot-swap to change it later. Weigh gasket mount for a softer typing feel. Choose PBT keycaps for durability. Settle on a layout that fits your desk and your need for a numpad. Get those right and you own a keyboard that is a daily pleasure, not just a tool.