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Head to head · Prices checked Nov 7, 2026

zFrontier Soso pad Numpad vs MMD KM40

Get the MMD KM40 for the 2,000 mAh battery and qmk.

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Quick verdict

Which one should you get?

Get the

zFrontier Soso pad Numpad

Build quality in the top 25% of Numpad boards under $100.

Rules this board out

  • Numpad only. This is not a full keyboard.

Get the

MMD KM40

Battery

Build quality in the top 10% of 40% boards under $150.

Rules this board out

  • Compact layout only. No function row, dedicated arrow keys, or numpad.

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.

zFrontier Soso pad Numpad

MMD KM40

  • Layout size

    Numpad

    40%

  • Battery

    700 mAh

    2,000 mAh

    A larger battery means fewer cables during the day

  • QMK

    No

    Yes

    The deep option when you want to remap every key

  • Plate material

    FR4

    Polycarbonate

  • Backlight

    None

    RGB

    RGB for looks and low light rather than speed

KeebFinder scores

How we score
  • zFrontier Soso pad Numpad
  • MMD KM40
Performance
46
61
Build quality
77
82
Productivity
62
69
Customizability
53
83
Portability
82
84

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Case material: Aluminum
  • Switch options: Linear, Tactile
  • Mount style: Gasket Mount
  • VIA
See every spec side by side

Full specs

zFrontier Soso pad Numpad vs MMD KM40 specs

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

5 of 20 specs differ

zFrontier Soso pad Numpad

MMD KM40

Typing & switches

Switch options

Linear, Tactile
Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

Numpad
40%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Battery

700 mAh
2,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum

Plate material

FR4
Polycarbonate

Keycaps

—
PBT

Weight

—
620 g

Typing angle

7°
—

Backlight

None
RGB

Firmware & software

QMK

No
Yes

VIA

Yes
Yes

Extras

Released

2026
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.

MMD KM402 stores

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