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Head to head · Prices checked Nov 7, 2026

Jamesdonkey RS2 4.0 vs Keychron K2 Pro

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Quick verdict

Which one should you get?

Get the

Jamesdonkey RS2 4.0

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

Rules this board out

  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

Get the

Keychron K2 Pro

Build quality in the top 5% of 75% boards under $100.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • 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

Keychron K2 Pro

  • Layout size

    96%

    75%

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired

    Wireless for several devices and wired for lower latency

  • Case material

    Aluminum

    ABS, Aluminum, Plastic

  • Switch options

    Linear

    Clicky, Linear, Tactile

  • Mount style

    Gasket Mount

    PCB Mount, Plate Mount, Tray Mount

KeebFinder scores

How we score
  • Jamesdonkey RS2 4.0
  • Keychron K2 Pro
Performance
58
82
Build quality
71
90
Productivity
93
95
Customizability
82
96
Portability
53
79

What they share

  • Hot-swappable
  • Battery: 4,000 mAh
  • QMK
  • Sound dampening
See every spec side by side

Full specs

Jamesdonkey RS2 4.0 vs Keychron K2 Pro specs

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

15 of 27 specs differ

Jamesdonkey RS2 4.0

Keychron K2 Pro

Typing & switches

Switch options

Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
PCB Mount, Plate Mount, Tray Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

96%
75%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-SW, ISO-UK, JIS

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

Yes
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired

Max polling rate

—
1,000 Hz

Battery

4,000 mAh
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Aluminum, Plastic

Plate material

—
Steel

Keycaps

PBT
ABS, PBT

Weight

1,150 g
1,070 g

Dimensions

34 x 405 x 138 mm
25 x 317 x 122 mm

Typing angle

—
5°

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

Yes
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2022

For EU buyers

ISO layouts by store

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

Jamesdonkey RS2 4.0

No ISO layout at the stores we track.

Keychron K2 Pro

  • Keychron

    ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW

    In stockShips to you

  • Keychron (DE)

    ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW

    In stockDoes not ship to you

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.

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