Safe choices
- NuPhy's own low-profile sets in its nSA profile, made for exactly this board
- Third-party low-profile sets that state Gateron Low Profile 2.0 or Air75 V2 compatibility
- Any set must cover a 75% layout with the Air's sizes; NuPhy's own sets always do
The MX-stem nuance
Gateron LP 2.0 stems are MX-shaped, which is why full-height caps physically attach. The problem is geometry, not the stem: tall caps raise the typing plane far above the low chassis, keys collide with the case lip on the edges, and the shine-through and acoustics are designed around short caps.
Mac users
NuPhy ships Mac legends and modifiers in the box and sells Mac-first sets; if you run the board on macOS this is one of the few low-profile ecosystems where correct Command/Option caps are easy to get.
Where buyers go wrong
- Buying a gorgeous full-height set first and hoping. The stems fit, so nothing warns you until the caps tower over the case and the edge keys scrape the lip.
- Assuming Choc keycaps work because they are also low profile. Choc stems are not MX-shaped and will not even attach.
- Grabbing a set sold for the Air75 V1 without checking. NuPhy changed switch platforms between generations and older sets were shaped around the older hardware; confirm the listing names the V2.
- Ignoring spacebar and bottom-row sizes. Low-profile sets are less standardized than MX sets, so compare the kit map to your board key by key.
What a profile swap changes on a board this thin
On a full-height board, switching profiles mostly changes sculpt and sound. On the Air75 V2 the stakes are different: the whole point of the board is a typing plane barely above the desk, so even a few millimeters of extra cap height changes wrist angle more than it would on a tall board. Owners who swap between nSA and flatter low-profile sets report the difference is immediately noticeable in posture, not just feel. If you type without a wrist rest because the board is low, a taller set can quietly reintroduce the strain the board was bought to avoid. When in doubt, stay near the stock height and treat profile changes as an appearance decision, not an ergonomic upgrade.
Keeping legends and texture alive
Low-profile caps take more finger contact per surface area than sculpted full-height caps, so wear shows sooner on cheap materials. Dye-sublimated PBT legends effectively cannot rub off; pad-printed or laser-etched legends on coated caps can, and shine-through sets vary widely in how the legend layer is made. The community's usual guidance applies here with extra force: prefer dye-sub PBT or doubleshot legends if you keep boards for years, wash caps in lukewarm soapy water only, and keep solvents and alcohol wipes away from printed legends. One low-profile specific: the caps are thin, so pull them with a wire puller and gentle rocking; plastic ring pullers scratch the sides more visibly than they would on tall caps.