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Head to head · Prices checked Oct 31, 2026

Jamesdonkey RS2 4.0 vs Xinmeng M75/M75 Pro

Get the Jamesdonkey RS2 4.0 for hot-swappable and knob.

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Quick verdict

Which one should you get?

Get the

Jamesdonkey RS2 4.0

Hot-swappable

Build quality in the top 40% of 96% boards under $100.

Rules this board out

  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

Get the

Xinmeng M75/M75 Pro

Build quality in the bottom 10% of 75% boards under $100.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
  • No numpad.

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.

Jamesdonkey RS2 4.0

Xinmeng M75/M75 Pro

  • Layout size

    96%

    75%

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Switch options

    Linear

    Silent

  • Mount style

    Gasket Mount

    Tray Mount

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • Jamesdonkey RS2 4.0
  • Xinmeng M75/M75 Pro
Performance
58
43
Build quality
71
42
Productivity
93
42
Customizability
82
49
Portability
53
56
See every spec side by side

Full specs

Jamesdonkey RS2 4.0 vs Xinmeng M75/M75 Pro specs

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

12 of 22 specs differ

Jamesdonkey RS2 4.0

Xinmeng M75/M75 Pro

Typing & switches

Switch options

Linear
Silent

Hot-swappable

Yes
No

Mount style

Gasket Mount
Tray Mount

Sound dampening

Yes
No

Layout

Layout size

96%
75%

Layout standard

ANSI
—

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
LED

Media keys

Yes
No

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
—

Max polling rate

—
1,000 Hz

Battery

4,000 mAh
—

USB-C

Yes
No

Build & materials

Case material

Aluminum
—

Keycaps

PBT
—

Weight

1,150 g
—

Dimensions

34 x 405 x 138 mm
—

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

Mac & Windows

Yes
No

Extras

Released

2024
2026

Where to buy

Compare prices

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