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Head to head · Prices checked Oct 30, 2026

Jamesdonkey RS2 4.0 vs Xinmeng M75 Pro

Get the Xinmeng M75 Pro for the 5,000 mAh battery.

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Quick verdict

Which one should you get?

Get the

Jamesdonkey RS2 4.0

Build quality in the top 35% 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 Pro

Battery

Build quality in the top 40% of 75% boards under $50.

Rules this board out

  • 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 Pro

  • Layout size

    96%

    75%

  • Battery

    4,000 mAh

    5,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    Aluminum

    Plastic

  • Switch options

    Linear

    Linear, Silent

  • Display

    None

    TFT

    A case display rather than a typing feature

KeebFinder scores

How we score
  • Jamesdonkey RS2 4.0
  • Xinmeng M75 Pro
Performance
58
82
Build quality
71
74
Productivity
93
81
Customizability
82
79
Portability
53
80

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Mount style: Gasket Mount
  • Knob
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Jamesdonkey RS2 4.0 vs Xinmeng M75 Pro specs

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

11 of 23 specs differ

Jamesdonkey RS2 4.0

Xinmeng M75 Pro

Typing & switches

Switch options

Linear
Linear, Silent

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

96%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
TFT

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 mAh
5,000 mAhBetter

USB-C

Yes
No

Build & materials

Case material

Aluminum
Plastic

Keycaps

PBT
PBT

Weight

1,150 g
900 g

Dimensions

34 x 405 x 138 mm
20 x 326 x 152 mm

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2024

Where to buy

Compare prices

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

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Lowest price across stores, Amazon excluded.

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