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Head to head · Prices checked Oct 21, 2026

Keychron K2 Max vs MMD KM40

Get the Keychron K2 Max for the 4,000 mAh battery.

Keychron K2 Max QMK Wireless Mechanical Keyboard ISO Layout Collection

Battery

Keychron K2 Max

4.5 · 2 reviews

from$94at Keychron

Shop nowCompare 2 stores
MMD KM40 - 40% Wireless Aluminium Keyboard

MMD KM40

5.0 · 4 reviews

from$84at MonacoKeys

Shop nowSee all prices

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 K2 Max

MMD KM40

  • Layout size

    75%

    40%

  • Battery

    4,000 mAh

    2,000 mAh

  • Case material

    ABS, Aluminum

    Aluminum

  • Switch options

    Clicky, Linear, Tactile

    Linear, Tactile

  • Mount style

    PCB Mount, Plate Mount

    Gasket Mount

KeebFinder scores

How we score
  • Keychron K2 Max
  • MMD KM40
Performance
81
61
Build quality
86
83
Productivity
95
69
Customizability
91
84
Portability
79
84

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • QMK
  • VIA
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Keychron K2 Max

4.5

2 owner reviews

Praise
“Négatif: Le temps de livraison et la clareté des infos”
EvanVerified buyer· via Keychron

MMD KM40

5.0

4 owner reviews

Praise
“Keycaps are dyesub, but still PBT Tactile switches feature a proper tactile feeling with great typing experience The case feels and looks really premium layer activation could be nicer but in the end you just gotta get used to the board”
Andi· via MonacoKeys

Full specs

Keychron K2 Max vs MMD KM40 specs

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

14 of 26 specs differ

Keychron K2 Max

MMD KM40

Typing & switches

Switch options

Clicky, Linear, Tactile
Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

PCB Mount, Plate Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

75%
40%

Layout standard

ANSI, ISO, ISO-DE, ISO-Nordic, ISO-SW, ISO-UK
ANSI

Ergonomics

Standard
Standard

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

4,000 mAhBetter
2,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS, Aluminum
Aluminum

Plate material

Steel
Polycarbonate

Keycaps

PBT
PBT

Weight

940 g
620 g

Dimensions

32 x 317 x 122 mm
—

Typing angle

5°
—

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

N-key rollover

Yes
No

Mac & Windows

Yes
No

Extras

Released

2024
2026

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • KeychronHK

    In stock
    $94Visit
  • Keychron (DE)DE

    In stock
    $127Visit
  • AmazonGlobal

    Check price
    Visit
  • MKUS

    Out of stock
    $120Visit
MMD KM402 stores
  • MonacoKeysDE

    In stock
    $84Visit
  • AmazonGlobal

    Check price
    ~$84Visit

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