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Head to head · Prices checked Oct 21, 2026

MMD KM40 vs KEEBD Rhymestone Split Ortholinear

Get the MMD KM40 for qmk.

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.

MMD KM40

KEEBD Rhymestone Split Ortholinear

  • Ergonomics

    Standard

    Split, Ortholinear

  • Case material

    Aluminum

    Acrylic, Plastic

  • Switch options

    Linear, Tactile

    Tactile

  • Display

    None

    Yes

  • QMK

    Yes

    No

KeebFinder scores

How we score
  • MMD KM40
  • KEEBD Rhymestone Split Ortholinear
Performance
61
42
Build quality
83
44
Productivity
69
51
Customizability
84
74
Portability
84
63

What they share

  • Layout size: 40%
  • Hot-swappable
See every spec side by side

From real owners

What owners say

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

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

KEEBD Rhymestone Split Ortholinear

No owner reviews collected yet.

Full specs

MMD KM40 vs KEEBD Rhymestone Split Ortholinear specs

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

10 of 19 specs differ

MMD KM40

KEEBD Rhymestone Split Ortholinear

Typing & switches

Switch options

Linear, Tactile
Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
No

Layout

Layout size

40%
40%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Split, Ortholinear

Display

None
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
—

Battery

2,000 mAh
—

USB-C

Yes
No

Build & materials

Case material

Aluminum
Acrylic, Plastic

Plate material

Polycarbonate
FR4

Keycaps

PBT
—

Weight

620 g
—

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

VIA

Yes
No

Extras

Released

2026
2022

Where to buy

Compare prices

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

MMD KM402 stores
  • MonacoKeysDE

    In stock
    $84Visit
  • AmazonGlobal

    Check price
    ~$84Visit
  • KEEBDAU

    In stock
    $80Visit
  • AmazonGlobal

    Check price
    ~$80Visit

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