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Head to head · Prices checked Nov 7, 2026

Fl·esports FL Esports CMK75 vs Jamesdonkey RS2 4.0

Get the Jamesdonkey RS2 4.0 for qmk.

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Quick verdict

Which one should you get?

Get the

Fl·esports FL Esports CMK75

Build quality in the bottom 30% of 75% boards under $150.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • No numpad.

Get the

Jamesdonkey RS2 4.0

QMK

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.

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.

Fl·esports FL Esports CMK75

Jamesdonkey RS2 4.0

  • Layout size

    75%

    96%

  • Case material

    Metal, Plastic

    Aluminum

  • Switch options

    Clicky, Linear, Tactile

    Linear

  • Display

    TFT

    None

    A case display rather than a typing feature

  • QMK

    No

    Yes

    The deep option when you want to remap every key

KeebFinder scores

How we score
  • Fl·esports FL Esports CMK75
  • Jamesdonkey RS2 4.0
Performance
51
58
Build quality
57
71
Productivity
69
93
Customizability
68
82
Portability
78
53

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

Fl·esports FL Esports CMK75 vs Jamesdonkey RS2 4.0 specs

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

10 of 22 specs differ

Fl·esports FL Esports CMK75

Jamesdonkey RS2 4.0

Typing & switches

Switch options

Clicky, Linear, Tactile
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

75%
96%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

TFT
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Battery

—
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Metal, Plastic
Aluminum

Plate material

Plastic, Steel
—

Keycaps

PBT
PBT

Weight

—
1,150 g

Dimensions

46 x 155 x 340 mm
34 x 405 x 138 mm

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

No
Yes

Mac & Windows

No
Yes

Extras

Released

2023
2024

Where to buy

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