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For this three-pin CHERRY MX housing, check the keyboard’s socket, PCB cutout and plate support before installation. The three-pin label alone does not guarantee hot-swap compatibility.
Three-pin housings omit the two side PCB locating legs used by five-pin versions. Hot-swap compatibility depends on the keyboard socket and PCB, not only the switch family. The eight pack sizes support testing, partial replacement and complete keyboard builds without custom quantity math.
TYPING FEEL & SOUND
The five switch choices are mechanically different, not merely different stem colors. Red and Black are linear, Brown adds a light tactile event without an audible click, Blue combines tactility with an intentional click, and Speed Silver shortens the actuation distance. That means the switch variant should be chosen for feel first, while pack size should be chosen for keyboard layout.
Red is the balanced reference at 45 cN and 2.0 mm pre-travel. Black raises actuation to 60 cN for a firmer press, while Speed Silver keeps 45 cN but actuates at 1.2 mm. Brown adds tactile feedback without the Blue switch's click, making it easier to use in shared spaces where strong acoustic feedback is undesirable.
Start with Red for a neutral linear reference, then choose Black for weight, Silver for speed, Brown for tactility, or Blue for click feedback.
CONSTRUCTION & SPECS
MX2A keeps the familiar CHERRY MX layout while refining stem and spring guidance. For buyers, the useful takeaway is improved consistency across the classic switch profiles—not a new switch format to learn.
The black-housing three-pin version uses a POM stem, a barrel-shaped spring and lubrication around the cylindrical guide area. Housing polymer grades can differ between opaque black and transparent RGB versions.
The important MX2A changes are guidance, spring control and contact consistency, with housing materials kept to the confirmed black-housing specification.
BUILD FIT & QUANTITY
A three-pin switch uses the central plastic post and electrical contacts without the two extra side locating legs found on five-pin PCB-mount housings. That makes this version a practical choice for many plate-supported custom keyboards and hot-swap boards that accept standard MX geometry. Compatibility still depends on the actual socket, PCB cutout and plate design, so the keyboard specification should be checked first.
This product is available in 10, 30, 50, 60, 70, 90, 100 and 110-switch packs. Ten and thirty are useful for testing or partial replacements, while 70, 90 and 110 are practical full-build quantities for many 65%, 75% and full-size layouts.
Choose three-pin for the board and plate first, then select a pack that covers the layout plus a few sensible spare switches.
COMPARE ALTERNATIVES
Choose this three-pin product when your keyboard uses a plate-supported layout, when the PCB does not accept the two extra locating legs, or when you prefer the black-housing appearance. The five-pin RGB product is the alternative when the board accepts PCB-mount locating pins and transparent housings are useful for under-switch lighting.
The feel decision remains separate from the mount decision. Red, Brown, Blue, Black and Speed Silver are available here, while the five-pin RGB product also adds Silent Red. If quiet typing is the priority, compare Silent Red before choosing a standard linear. If earlier actuation matters more, compare Speed Silver; for heavier resistance, compare Black against the Red baseline.
Choose mount and lighting needs first, then use switch profile to tune resistance, tactility, click feedback, actuation speed or quietness.
No. Both use 2.0 mm pre-travel and 4.0 mm total travel. Their nominal actuation forces differ: 45 cN for Red and 60 cN for Black.
Brown uses 45 cN nominal actuation. Blue uses 50 cN actuation with 2.2 mm pre-travel. Brown provides tactile feedback without the deliberate audible click found in Blue.