Compare MMD KM21 Ultra vs Yunzii YZ19 Differences Side by Side

Explore the comprehensive side-by-side comparison of the MMD KM21 Ultra and Yunzii YZ19 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
	85	71	Select a keyboard to compare
Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2026 Connects via USB-C Supports QMK firmware Supports VIA configuration Has built-in sound dampening Uses a Top Mount mounting style Equipped with a 980 mAh battery Made with a Aluminum case Offers Yes, Rgb RGB lighting	Released in 2024 Has Tactile, Linear switch options Features N-key rollover Uses a Gasket Mount mounting style Equipped with a 1500 mAh battery Weighs about 219.5 g Sized at 41 x 136 x 92 mm Features PBT keycaps Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 66.7 Build Quality: 81.7 Productivity: 89.3 Customizability: 89.8 Portability: 85.8	Scores Performance: 74.6 Build Quality: 67.1 Productivity: 64.8 Customizability: 75.1 Portability: 84.4
Name	Name MMD KM21 Ultra	Name Yunzii YZ19
Release year	Release year 2026	Release year 2024
Switch Options	Switch Options -	Switch Options Tactile, Linear
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size Numpad	Layout Size Numpad
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	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 Bluetooth, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate -
Battery capacity	Battery capacity 980 mAh	Battery capacity 1500 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 Top Mount	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum	Case Material -
Keycaps Material	Keycaps Material -	Keycaps Material PBT
Dimensions	Dimensions -	Dimensions 41 x 136 x 92 mm
Weight	Weight -	Weight 219.5g