Read a keyboard spec sheet like a piano listing. The switches are the keys' action: how heavy they feel, how far they travel and whether they click. That matters most, so start there. Layout size is the number of keys on the piano, from full size down to 60 percent. Build specs like mount, plate and case are the cabinet, shaping the sound and feel. Connection and gaming features like rapid trigger are extras. Choose the action and size first, then the rest.
How many keys the board has: full size with numpad, 96 percent, TKL (tenkeyless, no numpad), 75, 65 or 60 percent.
When it matters: Smaller boards leave more room for the mouse. 75 percent keeps the F-row and arrows, 65 drops the F-row, 60 drops arrows too. Brands use "compact" loosely, so check the exact layout.
The physical layout: ANSI (US, wide Enter bar), ISO (tall Enter, short left Shift, common in Europe) or JIS (Japanese).
When it matters: The wrong standard moves Enter and Shift under your fingers. It also affects custom keycap sets, which are sold per layout.
Skip it if you buy locally in the layout you already use.
Whether the board splits into two halves or uses a shaped layout to keep the wrists straighter.
When it matters: Can ease wrist and shoulder strain on long typing days. Expect a learning period of days to weeks, and some shortcut keys move.
Skip it if a standard board is comfortable for you.
How key presses are detected: mechanical contacts, optical light beams, or magnetic (Hall effect) sensors that measure key depth.
When it matters: Magnetic switches enable adjustable actuation and rapid trigger. Trap: magnetic boards only take magnetic switches, and optical boards only take their own optical switches, not standard MX switches.
How the switch feels: linear (smooth), tactile (a bump) or clicky (a bump plus a sharp click sound).
When it matters: The most important choice on the sheet. Linear suits fast gaming, tactile suits typing, clicky is loud in shared rooms. One model name often ships with several switch options; check yours.
The force needed to register a press, in gram-force (gf). Most switches fall between about 35 and 80 gf.
When it matters: Light switches feel fast but cause more accidental presses. Heavier switches tire fingers on long sessions. Brands measure differently, so compare within one brand where you can.
How far down a key registers a press, and how far it can travel in total, in millimeters.
When it matters: Standard switches actuate around 2 mm with about 4 mm of travel. Shorter actuation reacts faster in games but causes more typos. Low-profile switches cut total travel for a flatter feel.
Lets you set, in software, how deep a key must go before it registers. Mostly found on magnetic switch boards.
When it matters: A shallow point for gaming keys and a deeper one for typing keys on the same board. Very shallow settings, near 0.1 mm, can trigger from resting fingers.
Skip it if you mostly type.
Resets a key as soon as it starts rising, instead of waiting for it to pass a fixed reset point.
When it matters: Stops and restarts movement faster in shooters and rhythm games. The min step is the smallest lift that counts as a release. Differences of a few tenths of a millimeter are hard to feel.
Skip it if you do not play competitive games.
SOCD (simultaneous opposing cardinal directions) decides what happens when you hold two opposite keys, like A and D, at once.
When it matters: "Last input wins" modes make strafing snappier. Trap: some competitive games restrict hardware SOCD features and can kick or penalize players who use them. Check your game's rules.
Skip it if you do not play competitive shooters.
Lets keys act like a controller stick, sending how far a key is pressed rather than just on or off.
When it matters: Allows walking slowly by pressing W lightly, or smooth steering in driving games. Needs game support or a controller emulation mode, and many games ignore it.
Skip it if: Skip it unless you play games that use analog movement.
Whether you can pull out and replace switches without soldering, and which switch pins the sockets accept (3-pin or 5-pin).
When it matters: Lets you try new switches or replace a faulty one. 5-pin sockets take both 3-pin and 5-pin switches; 3-pin sockets need the extra pins clipped. Magnetic boards need magnetic switches.
Skip it if you are happy with the stock switches.
How the plate and switches sit in the case: tray mount (screwed to the bottom), top mount, or gasket mount (cushioned).
When it matters: Gasket mounts give a softer, bouncier feel and a muted sound. Tray mounts feel firmer and can ping. The effect is real but smaller than switch choice.
Skip it if: Skip it for your first mechanical keyboard.
What the plate holding the switches is made of: steel, aluminum, brass, polycarbonate, FR4 or POM.
When it matters: Metal plates feel stiff and sound sharper. Polycarbonate and POM flex more and sound deeper. This is taste, not quality.
Skip it if you are not tuning sound and feel.
What the case is made of, how many foam or silicone layers sit inside, and the resulting weight.
When it matters: Aluminum cases and more dampening reduce hollow echo and ping. Heavy boards stay put on the desk but are awkward to carry.
Skip it if sound is not a priority for you.
The type of bar mechanism under long keys like Space, Shift and Enter: plate-mount, PCB clip-in or PCB screw-in.
When it matters: Poorly tuned stabilizers rattle and are the most common complaint on cheap boards. Screw-in stabilizers are the most secure. Factory lubed stabilizers help a lot.
Skip it if: Skip it on boards with low-profile keys that use other mechanisms.
Whether the switches or stabilizers come lubricated from the factory.
When it matters: Lube smooths linear switches and quiets rattles. It saves hours of hand work. Quality varies, so heavy-handed lubing can make tactile switches feel dull.
Skip it if you like a scratchy or crisp stock feel.
How the board connects: USB cable, 2.4 GHz wireless with a dongle, Bluetooth, or several of these.
When it matters: For gaming, use the cable or 2.4 GHz dongle. Bluetooth adds lag but lets one board switch between several devices. A detachable USB-C cable is easy to replace.
How often the keyboard reports to the PC, in Hz. 1000 Hz means once per millisecond.
When it matters: 1000 Hz is standard for gaming boards. 8000 Hz trims a fraction of a millisecond and uses more CPU time and battery. Most players cannot feel the difference.
Skip it if: Skip anything above 1000 Hz unless you play competitively.
The size of the built-in battery in a wireless board, in mAh (milliamp-hours).
When it matters: Bigger means longer runtime, but lighting has a huge effect. A board that lasts weeks with lights off may need charging every few days with full RGB on.
Skip it if: Skip it for wired-only boards.
NKRO (N-key rollover) means every key pressed at once registers, with no limit.
When it matters: Most games rarely need more than a handful of keys at once, so the older 6-key limit (6KRO) is enough for most people. Some boards offer NKRO only in wired mode.
Skip it if: Skip it unless you play rhythm games or chord-heavy input.
What the keycaps are made of, usually ABS or PBT plastic.
When it matters: ABS develops a shiny, greasy look with use. PBT resists shine and sounds slightly deeper. Thickness matters as much as material.
Skip it if you plan to replace the keycaps.
How the letters are applied: double-shot (a second molded plastic), dye-sublimation, laser etching or pad printing.
When it matters: Double-shot and dye-sub legends never wear off. Pad-printed legends are the cheapest and can fade within months of heavy use. Dye-sub legends do not let backlight shine through.
The shape and height of the keycaps, such as Cherry, OEM, SA or low-profile, and whether rows are sculpted.
When it matters: Taller profiles like SA feel different and can slow fast typists. Replacement sets must match your layout and, on low-profile boards, the switch stem type.
Skip it if you keep the stock keycaps.
The lighting: none, single color or per-key RGB, and whether LEDs face north (top) or south (toward you).
When it matters: Lighting does not change feel. South-facing LEDs avoid keycap clearance problems with some Cherry profile keycaps. North-facing LEDs light legends better.
Skip it if: Skip it unless you want lighting.
The software running inside the board: open firmware like QMK or VIA, or the brand's own.
When it matters: QMK and VIA let you remap every key and store layers on the board, with no background app needed. Proprietary software may be Windows only.
Skip it if you do not remap keys.
A physical dial, usually for volume, and any small screen built into the board.
When it matters: Handy for quick volume control. Displays mostly show status or images and add cost and battery drain.
Skip it if you use media keys or on-screen controls.