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Head to head · Prices checked Nov 11, 2026

KEEBD Contra vs MMD KM40

Get the MMD KM40 for hot-swappable and qmk.

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Quick verdict

Which one should you get?

Get the

KEEBD Contra

Build quality in the bottom 5% of 40% boards under $150.

Rules this board out

  • Switches are soldered. Swapping them means soldering.

Get the

MMD KM40

Hot-swappable

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

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.

KEEBD Contra

MMD KM40

  • Hot-swappable

    No

    Yes

    Switch changes without soldering

  • Case material

    Acrylic, Plastic

    Aluminum

  • Switch options

    Tactile

    Linear, Tactile

  • QMK

    No

    Yes

    The deep option when you want to remap every key

  • VIA

    No

    Yes

    GUI remapping without compiling firmware

KeebFinder scores

How we score
  • KEEBD Contra
  • MMD KM40
Performance
55
60
Build quality
41
82
Productivity
48
69
Customizability
52
83
Portability
60
84

What they share

  • Layout size: 40%
See every spec side by side

Full specs

KEEBD Contra vs MMD KM40 specs

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

11 of 20 specs differ

KEEBD Contra

MMD KM40

Typing & switches

Switch options

Tactile
Linear, Tactile

Hot-swappable

No
Yes

Mount style

—
Gasket Mount

Sound dampening

No
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

40%
40%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Connectivity & battery

Connection

—
Bluetooth, 2.4 GHz, Wired

Battery

—
2,000 mAh

USB-C

No
Yes

Build & materials

Case material

Acrylic, Plastic
Aluminum

Plate material

FR4
Polycarbonate

Keycaps

—
PBT

Weight

—
620 g

Backlight

None
RGB

Firmware & software

QMK

No
Yes

VIA

No
Yes

Extras

Released

2021
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.

KEEBD Contra2 stores
MMD KM402 stores

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