Dagk Alloy40 V2 vs MMD KM40Kit or QMK/VIA?
Choose the MMD KM40 for a ready-to-use, programmable 40% keyboard, or the Dagk Alloy40 V2 if you specifically want a barebones kit and its larger battery.
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Which one should you get?
Get the
Dagk Alloy40 V2
Battery
Build quality in the top 50% of 40% boards under $150.
- Barebones DIY kit format for buyers who want to build around their own switches and keycaps.
- 3000mAh battery, larger than the MMD KM40's 2000mAh battery.
- Aluminum case with gasket mounting and hot-swap support.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Get the
MMD KM40
QMK
Build quality in the top 10% of 40% boards under $150.
- Pre-built format with switches and keycaps installed.
- QMK and VIA support, with the vendor describing programmable layers.
- 620g weight and vendor-listed dimensions of 235 × 85 × 20–28 mm.
For most buyers who want a functional 40% keyboard without sourcing core parts separately, choose the MMD KM40: it is pre-built and includes QMK/VIA support. Choose the Dagk Alloy40 V2 if you want a barebones DIY starting point and value its 3000mAh battery more than the MMD's lighter weight and built-in programmability.
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.
Dagk Alloy40 V2
MMD KM40
Battery
3,000 mAh
2,000 mAh
A larger battery means fewer cables during the day
Weight
930 g
620 g
Heavier boards stay planted and lighter ones travel
QMK
No
Yes
The deep option when you want to remap every key
VIA
No
Yes
GUI remapping without compiling firmware
Sound dampening
No
Yes
- Dagk Alloy40 V2
- MMD KM40
- Performance
- 5860
- Build quality
- 7082
- Productivity
- 6069
- Customizability
- 7683
- Portability
- 9084
- Layout size: 40%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Case material: Aluminum
- Mount style: Gasket Mount
What will you mostly use it for?
The MMD KM40 is the more straightforward choice for programming, office use, and content workflows because it is pre-built and explicitly supports QMK/VIA. Its lower weight and stated compact dimensions also favor travel, although the Dagk has the larger battery. For modding, the choice depends on whether you prioritize a barebones DIY kit or firmware support alongside hot-swap. Both provide the same broad connection modes and gasket mounting.
Pick the MMD KM40
- Both keyboards offer wired, 2.4 GHz, and Bluetooth connections, with hot-swap support.
- The MMD listing specifies linear and tactile switch options, while the Dagk is sold as a barebones kit.
Dagk Alloy40 V2 vs MMD KM40 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
8 of 21 specs differ
Dagk Alloy40 V2
MMD KM40
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Display
Connection
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
Mac & Windows
Released
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Dagk Alloy40 V2 vs MMD KM40: your questions
The Dagk Alloy40 V2 is listed as a DIY barebones kit, while the MMD KM40 is pre-built with switches and keycaps installed. The MMD also lists QMK/VIA support, which is not listed for the Dagk.
The Dagk is identified as a barebones keyboard kit, so buyers should not treat it as a fully built keyboard. Its product listing includes the kit, a Type-C cable, a 2.4G receiver, and a manual.
Yes, the MMD KM40 is listed as pre-built, with switches and keycaps already installed. Its stated hot-swap support allows switches to be changed without soldering.
The MMD KM40 explicitly lists QMK and VIA support. The Dagk Alloy40 V2 lists hot-swap and DIY kit features, but not QMK or VIA support.
The MMD KM40 weighs 620g, while the Dagk Alloy40 V2 weighs 930g. The MMD vendor also lists dimensions of 235 × 85 × 20–28 mm.
The Dagk Alloy40 V2 has a listed 3000mAh battery, compared with 2000mAh for the MMD KM40. Battery capacity alone does not establish how long either keyboard will run between charges.
Both list Bluetooth and 2.4 GHz wireless connectivity, as well as wired USB-C. The MMD vendor further describes Bluetooth 5.0 and pairing with up to three devices.
The MMD KM40 is listed as hot-swappable, and its vendor says switches can be changed without soldering. The vendor also lists linear and tactile options, while the keyboard is described as arriving with switches installed.
The Dagk's south-facing LEDs may leave shine-through legends dark. Its compatibility rule also warns that some sculpted keycaps can clip the LEDs.
The MMD specifications list an aluminum case, a polycarbonate plate, and PBT keycaps. The vendor also describes Poron and IXPE sound-dampening materials.
Yes, both are listed as 40% keyboards with an ANSI layout standard. A 40% layout is compact, so check the key arrangement and layer setup against your typing needs before choosing.
The MMD KM40 has the clearer firmware customization feature set because it explicitly lists QMK and VIA support. The Dagk is a barebones kit with hot-swap support, but its listing does not specify QMK or VIA.
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