Jamesdonkey RS2 4.0 vs NIUNIU Roly poly 40 R3
Get the Jamesdonkey RS2 4.0 for knob and qmk.
![[Pre-Order] STAGGERED Roly-poly 40 R3 Keyboard Kit by Niuniu](https://cdn.shopify.com/s/files/1/1674/0405/files/lqGJ5CU1q_XZzAS-6G7bu3QqWXvt.JPG-large1400.png?v=1745233035&width=3840&quality=75)
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
NIUNIU Roly poly 40 R3
Layout size
96%
40%
Mount style
Gasket Mount
Top Mount
Knob
Yes
No
QMK
Yes
No
Sound dampening
Yes
No
- Jamesdonkey RS2 4.0
- NIUNIU Roly poly 40 R3
- Performance
- 5847
- Build quality
- 7175
- Productivity
- 9351
- Customizability
- 8270
- Portability
- 5380
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Case material: Aluminum
- Switch options: Linear
Jamesdonkey RS2 4.0 vs NIUNIU Roly poly 40 R3 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 24 specs differ
Jamesdonkey RS2 4.0
NIUNIU Roly poly 40 R3
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIAL
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Lowest price across stores, Amazon excluded.
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.
Not sold on either?
![[Pre-Order] ORTHO Roly-poly 40 R3 Keyboard Kit by Niuniu](https://cdn.shopify.com/s/files/1/1674/0405/files/42A5DCDF6CC2BFFDC11E43D62A22AC4B_56e3ae27-1b5a-4910-8d50-059f522426b7.jpg?v=1745208295&width=3840&quality=75)
Still torn?
Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.