Compare Keychron Q2 Max vs Q4 HE Differences Side by Side

The Q2 Max uses mechanical Gateron Jupiter switches in a 65% layout, while the Q4 HE uses Gateron Double-Rail Magnetic Hall Effect switches in a 60% layout. The Q4 HE adds Rapid Trigger, adjustable actuation from 0.2 to 3.8 mm and Dynamic Keystrokes, which the Q2 Max listing does not include. Both share an aluminum body, gasket mount, QMK firmware and a 4000 mAh battery.

The Q4 HE is the more gaming-focused option because its magnetic switches support Rapid Trigger and Dynamic Keystrokes, and actuation can be set from 0.2 to 3.8 mm. It also supports Analog Mode for variable input, similar to a controller. The Q2 Max still offers a 1000 Hz polling rate on 2.4 GHz and wired modes, but its mechanical switches lack those Hall Effect behaviors.

Yes, the Q2 Max supports ISO and ANSI standards, with Keychron listing ISO-UK, ISO-DE, ISO-Nordic and ISO-SW variants. The Q4 HE is ANSI only according to its layout standard. Buyers who need a regional layout should check the Q2 Max ISO collection.

No, Keychron states the Q4 HE hot-swap is compatible only with Gateron Double-Rail Magnetic switches, and it does not support other magnetic switches such as Gateron Magnetic Jade or KS-20. The Q2 Max, by contrast, hot-swaps nearly all 3-pin and 5-pin MX-style mechanical switches including Cherry, Gateron, Kailh and Panda.

The Q2 Max is rated for up to 180 hours with the backlight off, or up to 100 hours at the lowest RGB brightness. The Q4 HE is rated for up to 100 hours with the backlight off. Both use a 4000 mAh rechargeable li-polymer battery.

The Q4 HE is smaller and lighter, measuring 303.07 x 121 mm and weighing 1415 g, against 327 x 121 mm and 1528 g for the Q2 Max. Both support Bluetooth with up to three devices. Neither is a thin travel keyboard, so the Q4 HE is only relatively more portable.

Both listings confirm QMK firmware and the Keychron Launcher web app for remapping keys and macros on macOS, Windows and Linux. The Q2 Max metadata also lists VIA support and the Q4 HE metadata lists VIA support. Launcher access requires a wired connection and a current Chrome, Opera or Edge browser.

The Q2 Max metadata lists a 7 degree angle, and the Keychron spec page states 6.5 degrees, with a front height of 21 mm without keycaps. The Q4 HE spec page lists a 5.3 degree angle with a front height of 23.71 mm. The Q2 Max therefore sits at a slightly steeper angle.

Both listings mention knob support. The Q2 Max page sells a Fully Assembled Knob and a Barebone Knob version, and the Q4 HE is listed as 60 percent ANSI with knob. On the Q2 Max the knob can be remapped through the Keychron Launcher web app.

The Q2 Max ships with KSA double-shot PBT keycaps described as non-shine-through and oil-resistant. The Q4 HE ships with OSA double-shot PBT keycaps, also non-shine-through, in a profile Keychron describes as similar in height to OEM with an SA-like shape. Both include additional Mac and Windows keycaps.

No, the Q4 HE weighs 1415 g while the Q2 Max weighs 1528 g in the fully assembled versions. Both use a 6063 aluminum body, with the Q2 Max using a polycarbonate plate and the Q4 HE using an aluminum plate. The Q2 Max is the heavier board by about 113 g.

The Q2 Max uses a double-gasket design with IXPE, PET and Latex acoustic foams plus a bottom case acoustic foam. The Q4 HE also uses a double-gasket design with acoustic foam, PET film and Latex, plus silicone pads between the top and bottom cases. Both aim to reduce metal resonance and shape the typing sound.