Low-profile mechanical keyboards

Low-profile boards make most sense if you're moving from a laptop, a Mac keyboard or a slim office board and find full-height mechanical keyboards too tall. Because your hands sit lower, many people find they don't need a wrist rest. They're also lighter and thinner, so they travel better.

They suit people less well if you want to experiment. There are far fewer low-profile switches and keycap sets than standard ones, and the sound is usually lighter and clickier than the deep thock some full-height boards are known for. If changing parts is half the fun for you, a standard board will give you much more to play with.

Keychron's low-profile range comes in three sizes with the same features: wireless over Bluetooth or a 2.4 GHz receiver as well as a cable, hot-swap sockets for Gateron low-profile switches, double-shot PBT keycaps, QMK and VIA for remapping, and UK ISO versions from Keychron's UK store.

The Keychron K3 Max is the 75% at £109.99, weighing 525 g^[1], light enough to live in a laptop bag. The Keychron K1 Max is the tenkeyless version, also £109.99^[2]. The Keychron K5 Max is full size with a numpad at £114.99^[3], a slim alternative to an office keyboard if you enter numbers a lot. All three have an ABS body with an aluminium frame.

NuPhy made its name with slim boards, and the Air series is what it's known for. The NuPhy Air75 V3 is a 75% with an aluminium top frame over a plastic base, a knob, a 4,000 mAh battery and three ways to connect, at $139.95 in the US^[4]. A UK-layout version is sold, but we couldn't find a UK list price. The NuPhy Air65 V3 is the 65% version at $129.95, weighing 635 g^[5]; we found only US listings for it, so UK availability is unconfirmed.

Both are hot-swappable with NuPhy's own low-profile switches and run QMK and VIA. They pair easily with Macs, which is a big part of their appeal; our mechanical keyboards for Mac guide has more on that.

The Logitech MX Mechanical is the office choice: a slim full-size board with Logitech's own low-profile switches in Tactile Quiet, Clicky or Linear, a white backlight that comes on as your hands approach, and Bluetooth or Logitech's Bolt receiver, for £149.99 in a UK layout^[6]. Its switches can't be swapped, and its USB-C port is for charging rather than a wired connection. Our K5 Max against MX Mechanical comparison sets it against Keychron's slim full-size board.

For games, the Logitech G915 X LIGHTSPEED is a slim full-size wireless board on Logitech's GL switches in linear, tactile or clicky, with a volume roller and nine G keys, at £199.99 from Logitech UK^[7]. We have less confirmed detail on it than on the others, so check the spec table on the listing you buy from.

The Corsair VANGUARD AIR 99 WIRELESS is the most feature-heavy: a gasket-mounted 99% board on Corsair's OPX low-profile optical switches, with a colour screen, a rotary dial, six macro keys, 8,000 Hz polling and three ways to connect. Scan listed it at £239.99 in UK ISO^[8]. Hot-swap isn't listed.

Standard mechanical keyboards almost all take MX-style switches and keycaps, so parts from one brand fit another. Low-profile boards don't share a standard in the same way. Keychron's K Max boards take Gateron low-profile switches; NuPhy's Air boards take NuPhy's own; split boards such as the ZSA Voyager use Kailh Choc switches^[9]; and Logitech and Corsair use switches that aren't sold separately at all.

In practice that means two things. First, a hot-swappable low-profile board only takes switches of its own type, so check which ones before you buy spares, and expect a short list. Second, keycaps: low-profile keycaps have different stems and shapes for each switch type, and full-height MX keycaps won't fit at all. Choose a board whose stock keycaps you like, because replacing them is harder than on a standard board.

If those limits sound fine, a low-profile board is a comfortable step up from a laptop keyboard. If not, our hot-swap keyboards under £120 guide covers standard boards at similar prices, and our sizes guide helps with which size to pick either way.