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Head to head · Prices checked Nov 2, 2026

Keychron Q5 vs MMD KM40Full Layout or Wireless 40%

Choose the Q5 for a near-full-size layout with a numpad, or the KM40 for wireless connectivity and a far smaller, lighter design.

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Quick verdict

Which one should you get?

Get the

Keychron Q5

Knob

Build quality in the top 5% of 96% boards under $150.

If you want

  • 96% layout retains a numpad and multi-media keys.
  • Wired connection with a listed 1000 Hz polling rate.
  • Aluminum case, steel plate, and gasket mount.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

Get the

MMD KM40

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

If you want

  • Bluetooth, 2.4 GHz, and wired connectivity, with a 2000 mAh battery.
  • 620 g weight and 40% ANSI layout make it the more portable option.
  • Aluminum case, polycarbonate plate, and gasket mount.

Rules this board out

  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
  • Compact layout only. No function row, dedicated arrow keys, or numpad.

Bottom line

Pick the Keychron Q5 if you want a numpad, dedicated keys, and a programmable knob in a wired 96% keyboard. Choose the MMD KM40 if a lighter board with Bluetooth and 2.4 GHz connectivity matters more than a conventional key layout. Before buying the KM40, make sure you are comfortable using layers in place of dedicated keys.

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 Q5

MMD KM40

  • Layout size

    96%

    40%

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Switch options

    Clicky, Linear, Tactile

    Linear, Tactile

  • Mount style

    Gasket Mount, Plate Mount

    Gasket Mount

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • Keychron Q5
  • MMD KM40
Performance
72
61
Build quality
89
83
Productivity
97
69
Customizability
98
83
Portability
46
84

What they share

  • Hot-swappable
  • Case material: Aluminum
  • QMK
  • VIA
  • Sound dampening
See every spec side by side

Best for

What will you mostly use it for?

The Q5 is the more straightforward choice for desk work that benefits from a numpad, dedicated keys, or its configurable knob. The KM40 stands out when moving between locations or devices, thanks to its low weight and three connection modes. Programming is a preference-driven tie: the Q5 reduces reliance on layers, while the KM40 offers a very compact layout designed around them. For modding, the Q5 has the edge on the listed build options and components.

For gaming

Pick the Keychron Q5

  • The Q5 has a 1000 Hz polling rate and wired connectivity.
  • Its 96% layout retains dedicated keys and a numpad, while the KM40 is a 40% board without dedicated arrow keys or a function row.

From real owners

What owners say

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

Keychron Q5

4.8

17 owner reviews

Praise
“I really like this keyboard. I have a couple of Q1s, and I like this layout better. The key caps on the silver gray model look terrific.”
k.s.Verified 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 Q5 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 Q5

MMD KM40

Typing & switches

Switch options

Clicky, Linear, Tactile
Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount, Plate Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

96%
40%

Layout standard

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

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz
—

Battery

Wired only
2,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum

Plate material

Steel
Polycarbonate

Keycaps

ABS, PBT
PBT

Weight

2,310 g
620 g

Dimensions

20 x 145 x 390 mm
—

Typing angle

5°
—

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

Mac & Windows

Yes
No

Extras

Released

2022
2026

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Keychron Q5

  • Keychron

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

    In stockShips to you

  • Keychron (DE)

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

    Out of stockDoes not ship to you

MMD KM40

No ISO layout at the stores we track.

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.

Lowest price across stores, Amazon excluded.

Keychron Q54 stores
MMD KM402 stores

FAQ

Keychron Q5 vs MMD KM40: your questions

The Q5 has a 96% layout with a numpad and multi-media keys, so it keeps more dedicated controls available. The KM40 uses a 40% layout, and its vendor describes accessing numbers, arrows, and function keys through layers.

Yes, the Q5's 96% layout retains number keys and a numpad. Its compact layout does not have the gaps of a full-size board.

The KM40 has no dedicated arrow keys or function row. Its vendor says those functions can be accessed through layers, which users can customize with QMK/VIA.

No, the Q5 is listed as wired only and uses USB-C connectivity. The MMD KM40 supports wired, Bluetooth, and 2.4 GHz connections.

The KM40 is the more travel-oriented option: it weighs 620 g and supports wireless connections. The Q5 weighs 2310 g, has a 96% layout, and is wired only.

Yes, both keyboards are listed as hot-swappable. Keychron specifies that the Q5 supports 3-pin and 5-pin MX switches, while the KM40 vendor description specifies a hot-swap PCB for 5-pin MX switches.

Both are listed with QMK and VIA support. The Q5 vendor also describes using Keychron Launcher for remapping and macros, while the KM40 vendor describes browser-based VIA configuration.

The KM40 may suit programmers who want a 40% layout and are comfortable assigning functions to layers. The Q5 is a more conventional option, with a 96% layout that retains a numpad and dedicated keys.

The Q5 includes a programmable knob that Keychron says can be assigned to tasks such as zooming, changing brush size, or selecting video clips. It also retains multi-media keys and a numpad.

The Q5 vendor describes its ISO version with ABS shine-through keycaps and south-facing RGB LEDs. The compatibility note warns that shine-through legends can stay dark with south-facing LEDs, and some sculpted keycaps may clip the LED.

No, the KM40 is listed with an ANSI layout only. Its compatibility notes specify that ISO-DE, UK, and other ISO variants are not offered.

The Keychron Q5 weighs 2310 g, while the MMD KM40 weighs 620 g. That makes the KM40 the lighter option for carrying between locations.

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