Compare Keychron Q9 vs MMD KM40 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron Q9 and MMD KM40 and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

Model
	95	82	Select a keyboard to compare
Rating	4.6 stars (10 reviews)	5.0 stars (4 reviews)
Purchase Options
Main differences	Released in 2022 Has Linear, Tactile, Clicky switch options Built with the ANSI, ISO layout standard Offers Split Spacebar ergonomics Comes with a knob Compatible with both Mac and Windows Includes screw-in stabilizers Supports Wired, Wired only connectivity Runs at a 1000 Hz polling rate Weighs about 1050 g Sized at 20 x 94 x 326 mm Offers Yes, Rgb, South-face, Rgb South-face RGB lighting	Released in 2026 Has Linear, Tactile switch options Built with the ANSI layout standard Offers Normal ergonomics Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 2000 mAh battery Weighs about 620 g Offers Yes, Rgb RGB lighting
Score	Scores Performance: 65.8 Build Quality: 91 Productivity: 94.5 Customizability: 97.1 Portability: 70.5	Scores Performance: 61.3 Build Quality: 82.8 Productivity: 69.5 Customizability: 84.2 Portability: 84.1
Name	Name Keychron Q9	Name MMD KM40
Release year	Release year 2022	Release year 2026
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Linear, Tactile
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 40%	Layout Size 40%
Layout Standard	Layout Standard ANSI, ISO	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Split Spacebar	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Wired, Wired only	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate -
Battery capacity	Battery capacity -	Battery capacity 2000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Gasket Mount	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, South-face	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum	Case Material Aluminum
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 20 x 94 x 326 mm	Dimensions -
Weight	Weight 1050g	Weight 620g