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Head to head · Prices checked Oct 30, 2026

Redragon K628 Pollux vs Jamesdonkey RS2 4.0

Get the Jamesdonkey RS2 4.0 for knob.

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Quick verdict

Which one should you get?

Get the

Redragon K628 Pollux

Build quality in the bottom 30% of 75% boards under $50.

Rules this board out

  • No numpad.

Get the

Jamesdonkey RS2 4.0

Knob

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.

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.

Redragon K628 Pollux

Jamesdonkey RS2 4.0

  • Layout size

    75%

    96%

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Case material

    Plastic

    Aluminum

  • Mount style

    Bottom Mount

    Gasket Mount

  • Knob

    No

    Yes

KeebFinder scores

How we score
  • Redragon K628 Pollux
  • Jamesdonkey RS2 4.0
Performance
79
58
Build quality
57
71
Productivity
61
93
Customizability
59
82
Portability
61
53

What they share

  • Hot-swappable
  • Switch options: Linear
See every spec side by side

Full specs

Redragon K628 Pollux vs Jamesdonkey RS2 4.0 specs

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

13 of 22 specs differ

Redragon K628 Pollux

Jamesdonkey RS2 4.0

Typing & switches

Switch options

Linear
Linear

Hot-swappable

Yes
Yes

Mount style

Bottom Mount
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

75%
96%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Battery

Wired only
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Plastic
Aluminum

Keycaps

ABS
PBT

Weight

470 g
1,150 g

Dimensions

—
34 x 405 x 138 mm

Backlight

RGB
RGB

Firmware & software

QMK

No
Yes

N-key rollover

Yes
No

Mac & Windows

No
Yes

Extras

Released

2023
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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