The only difference between version 1 and version 2 is the chip they use
Keychron M2 Wireless Mouse has the best Pixart 3395 sensor
The Q5 HE is compatible exclusively with the Gateron Double-Rail Magnetic Switch
and users can hot-swap with Gateron low-profile MX mechanical switch in a breeze (for RGB Backlight Hot-Swappable Version only)
Low Profile Double Shot PBT LSA Keycap Set Version 2 Gateron Switch The only difference between versionThis low profile LSA (low profile spherical angled) PBT keycap set is compatible with Keychron K Pro, K Max, and S series low profile ANSI layout keyboards (60%, 65%, 75%, 80%, 96%, and 100% layouts). However, it is not compatible with the Keychron K1 versions 1 to 5, K1 SE, K3, K5, K5 SE, and K7. THIS KEYCAP SET DOES NOT INCLUDE KEYBOARD.