Not sure which keyboard to choose? Try the Keyboard Finder now!

Head to head · Prices checked Nov 2, 2026

Keychron Q0 Numpad vs MMD KM21 Ultra

Get the MMD KM21 Ultra for knob and sound dampening.

KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Quick verdict

Which one should you get?

Get the

Keychron Q0 Numpad

Build quality in the top 10% of Numpad boards under $100.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

Get the

MMD KM21 Ultra

Knob

Build quality in the top 15% of Numpad boards under $100.

What actually differs

The differences that matter

Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.

Keychron Q0 Numpad

MMD KM21 Ultra

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Mount style

    Plate Mount

    Top Mount

  • Knob

    No

    Yes

  • Sound dampening

    No

    Yes

  • Plate material

    Steel

    Plastic

KeebFinder scores

How we score
  • Keychron Q0 Numpad
  • MMD KM21 Ultra
Performance
63
66
Build quality
83
81
Productivity
85
89
Customizability
96
89
Portability
71
86

What they share

  • Layout size: Numpad
  • Hot-swappable
  • Case material: Aluminum
  • QMK
  • VIA
See every spec side by side

Full specs

Keychron Q0 Numpad vs MMD KM21 Ultra specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

9 of 21 specs differ

Keychron Q0 Numpad

MMD KM21 Ultra

Typing & switches

Hot-swappable

Yes
Yes

Mount style

Plate Mount
Top Mount

Sound dampening

No
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz
—

Battery

Wired only
980 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum

Plate material

Steel
Plastic

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2026

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Still torn?

Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.