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Head to head · Prices checked Nov 10, 2026

NIUNIU @40 vs ORTHO Roly poly 40 R3Low-Profile vs Traditional Ortho

Choose the @40 for a sleek, low-profile build with more included modding materials, or the Rolypoly for a traditional 9-degree typing angle and top-mount design.

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Low-Profile

NIUNIU @40

[Pre-Order] @40 40% Low Profile Keyboard Kit by Niuniu

4.5 (4)

$89at zFrontier

90-day low

Quick verdict

Which one should you get?

Get the

NIUNIU @40

Low-Profile

Build quality in the top 20% of 40% boards under $150.

If you want

  • Low-profile design with a 12.5mm front height for a sleeker typing posture.
  • Includes sound dampening foam sheets and silicone pads for acoustic customization.
  • Comes with Kailh low-profile screw-in stabilizers.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.

Get the

NIUNIU ORTHO Roly poly 40 R3

Traditional Ortho

Build quality in the top 40% of 40% boards under $150.

If you want

  • Features a 9-degree typing angle, a common preference for ergonomics.
  • Uses a specified top-mount design for its typing feel.
  • Includes a battery compartment cover for cleaner wireless builds.

Bottom line

Select the NIUNIU @40 if you prioritize a low-profile, sleek keyboard and want more sound-dampening materials included in the kit. Opt for the NIUNIU ORTHO Rolypoly 40 R3 if you prefer a traditional 9-degree typing angle and a specified top-mount construction. Both are capable foundations for a custom 40% ortholinear build.

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.

NIUNIU @40

NIUNIU ORTHO Roly poly 40 R3

  • Low profile

    Yes

    No

  • Sound dampening

    Yes

    No

  • Screw-in stabilizers

    Yes

    No

    Easier to tune than the plate-mount stabs you get prebuilt

  • USB-C

    Yes

    No

KeebFinder scores

How we score
  • NIUNIU @40
  • NIUNIU ORTHO Roly poly 40 R3
Performance
47
47
Build quality
80
74
Productivity
80
57
Customizability
75
70
Portability
83
80

What they share

  • Layout size: 40%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Ergonomics: Ortholinear
  • Case material: Aluminum
  • Plate material: FR4
See every spec side by side

Best for

What will you mostly use it for?

The NIUNIU @40 holds slight advantages for office use and travel due to its lower profile, and for modders due to its included foam and silicone pads. The Rolypoly 40 R3's defining feature is its 9-degree typing angle. For gaming, programming, and content creation, the keyboards are effectively tied, with the decision boiling down to ergonomic preference and the value placed on the included accessory kits.

For gaming

It's a tie

  • Both offer identical multi-connectivity options (wired, Bluetooth, 2.4GHz) for low-latency flexibility.
  • Both are hot-swappable, allowing for quick switch changes to suit gaming preferences.
  • Their compact 40% size maximizes desk space for mouse movement.

Full specs

NIUNIU @40 vs ORTHO Roly poly 40 R3 specs

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

4 of 17 specs differ

NIUNIU @40

NIUNIU ORTHO Roly poly 40 R3

Typing & switches

Hot-swappable

Yes
Yes

Mount style

—
Top Mount

Low profile

Yes
No

Sound dampening

Yes
No

Screw-in stabilizers

Yes
No

Layout

Layout size

40%
40%

Layout standard

ANSI
ANSI

Ergonomics

Ortholinear
Ortholinear

Display

None
None

Connectivity & battery

Connection

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

USB-C

Yes
No

Build & materials

Case material

Aluminum
Aluminum

Plate material

FR4
FR4

Typing angle

—
9°

Backlight

None
None

Firmware & software

VIAL

Yes
Yes

Extras

Released

2025
2025

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.

NIUNIU @402 stores

FAQ

NIUNIU @40 vs ORTHO Roly poly 40 R3: your questions

The primary physical difference is the profile. The @40 is a low-profile keyboard with a 12.5mm front height, while the Rolypoly 40 R3 has a standard profile with a 9-degree typing angle and an 18.05mm front height.

The NIUNIU @40 kit includes sound dampening foam sheets and silicone pads. The listed contents for the Rolypoly 40 R3 do not mention these specific acoustic materials.

Yes, both are available in multiple connection models. You can choose a Wired Only, Dual Mode (Bluetooth and wired), or Tri Mode (2.4GHz, Bluetooth, and wired) version for each kit, according to their vendor pages.

The NIUNIU @40 includes Kailh low-profile screw-in stabilizers. The NIUNIU ORTHO Rolypoly 40 R3 kit includes plate-mounted stabilizers.

Only the NIUNIU @40 offers a choice between ortholinear and staggered layouts, according to its product description. The Rolypoly 40 R3 is designed specifically for an ortholinear layout.

Both the NIUNIU @40 and the Rolypoly 40 R3 support VIAL, which allows for extensive key remapping and macro programming without needing to reflash the firmware.

Both products are sold as DIY kits or barebones kits. This means they do not come with keycaps or switches, and you must assemble and provide those components yourself.

The NIUNIU ORTHO Rolypoly 40 R3 uses a top-mount design, as specified in its metadata and vendor description. The mounting style for the @40 is not explicitly stated.

The NIUNIU @40 has a significantly lower front height of 12.5mm. The Rolypoly 40 R3 has a front height of 18.05mm.

Batteries are included, but only if you purchase the Dual Mode or Tri Mode versions of either keyboard. The Wired Only versions do not include batteries.

Both kits offer anodized aluminum cases in various colors. The @40 also lists a Polycarbonate (PC) option, while the Rolypoly 40 R3 lists a unique Ceramic White Sprinkle option.

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