DOIO KB19B 01 vs MMD KM21 Ultra
Get the MMD KM21 Ultra for sound dampening and usb-c.
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.
DOIO KB19B 01
MMD KM21 Ultra
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Display
OLED
None
Sound dampening
No
Yes
Released
2023
2026
USB-C
No
Yes
- DOIO KB19B 01
- MMD KM21 Ultra
- Performance
- 6967
- Build quality
- 8282
- Productivity
- 7089
- Customizability
- 9789
- Portability
- 8586
- Layout size: Numpad
- Hot-swappable
- Case material: Aluminum
- Knob
- QMK
- VIA
DOIO KB19B 01 vs MMD KM21 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
5 of 20 specs differ
DOIO KB19B 01
MMD KM21 Ultra
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Battery
USB-C
Case material
Plate material
Weight
Dimensions
Backlight
QMK
VIA
Mac & Windows
Released
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