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ONEofZERO Si75 HE Hotswap RGB Keyboard

Neo One of Zero Si75 HE Mechanical Keyboard

The Keychron One of Zero Si75 HE is a 75% mechanical keyboard designed for users who want highly customizable key responses and a versatile typing experience. It suits gamers needing precise, fast inputs and typists who value adjustable actuation points and sound dampening. Its magnetic switches and modular design offer flexibility but require some familiarity with advanced keyboard features.</p... Read more
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Compare Neo One of Zero Si75 HE vs Keychron K2 HE vs Keychron Lemokey P1 HE Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Neo One of Zero Si75 HEKeychron K2 HEKeychron Lemokey P1 HE
80
ONEofZERO Si75 HE Hotswap RGB Keyboard
-15% off
100
Keychron K2 HE Wireless Magnetic Switch Custom Keyboard
-20% off
96
Lemokey P1 HE Wireless Magnetic Switch Custom Gaming Keyboard
0.0 (0)
4.6 (76)
5.0 (3)
  • Released in 2026
  • Has Magnetic switch options
  • Built with the ANSI layout standard
  • Supports Wired, Wired only connectivity
  • Runs at a 8000 Hz polling rate
  • Made with a ABS, Polycarbonate case
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
  • Released in 2024
  • Has Linear, Magnetic switch options
  • Built with the ANSI, ISO, ISO-UK, ISO-DE, ISO-ES, ISO-FR, ISO-CH, ISO-Nordic, JIS layout standard
  • Provides dedicated media keys
  • Uses a Tray Mount mounting style
  • Weighs about 1743 g
  • Sized at 30 x 127 x 41 mm
  • Made with a Aluminum, Wood, ABS, Resin case
  • Features PBT, ABS, PC keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face, White, White North-face RGB lighting
  • Released in 2025
  • Has Linear, Tactile, Clicky, Magnetic switch options
  • Built with the ANSI, ISO, ISO-DE layout standard
  • Weighs about 1630 g
  • Sized at 32 x 140 x 322 mm
  • Made with a Metal, Aluminum case
  • Offers Yes, Rgb, North-face, Rgb North-face, South-face, Rgb South-face RGB lighting
Scores
  • Performance: 95.2
  • Build Quality: 70.2
  • Productivity: 90.9
  • Customizability: 74.9
  • Portability: 65.6
Scores
  • Performance: 93.3
  • Build Quality: 90.9
  • Productivity: 96.9
  • Customizability: 99.5
  • Portability: 81.3
Scores
  • Performance: 93.4
  • Build Quality: 88.1
  • Productivity: 97.1
  • Customizability: 97.3
  • Portability: 81.4
Name
Neo One of Zero Si75 HE
Name
Keychron K2 HE
Name
Keychron Lemokey P1 HE
Release year
2026
Release year
2024
Release year
2025
Switch Options
Magnetic
Switch Options
Linear, Magnetic
Switch Options
Linear, Tactile, Clicky, Magnetic
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ANSI, ISO, ISO-UK, ISO-DE, ISO-ES, ISO-FR, ISO-CH, ISO-Nordic, JIS
Layout Standard
ANSI, ISO, ISO-DE
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
USB passthrough
 
Connection
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
8000 Hz
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
-
Battery capacity
4000 mAh
Battery capacity
4000 mAh
Hall Effect Support
 
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Gasket Mount
Mount Style
Tray Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face
Backlight
 
Rgb, North-face, White
Backlight
 
Rgb, North-face, South-face
Case Colors
Case Colors
Case Colors
Case Material
ABS, Polycarbonate
Case Material
Aluminum, Wood, ABS, Resin
Case Material
Metal, Aluminum
Keycaps Material
PBT
Keycaps Material
PBT, ABS, PC
Keycaps Material
PBT
Dimensions
-
Dimensions
30 x 127 x 41 mm
Dimensions
32 x 140 x 322 mm
Weight
-
Weight
1743g
Weight
1630g
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Product Description

The Keychron One of Zero Si75 HE is a 75% mechanical keyboard designed for users who want highly customizable key responses and a versatile typing experience. It suits gamers needing precise, fast inputs and typists who value adjustable actuation points and sound dampening. Its magnetic switches and modular design offer flexibility but require some familiarity with advanced keyboard features.

Key Features

  • Uses magnetic Hall Effect switches that detect keypresses without physical contact, reducing bounce and chatter for smoother inputs.
  • Adjustable actuation points from 0.2 to 3.8 mm with 0.1 mm increments, allowing users to fine-tune key sensitivity for faster or more deliberate presses.
  • Dynamic Rapid Trigger activates keys based on travel distance, enabling immediate response and faster keystrokes, beneficial in fast-paced gaming.
  • Dynamic Keystrokes lets each key perform up to four different actions depending on press depth, adding layered control without extra keys.
  • Analog Mode provides variable input levels per keypress, similar to game controllers, for nuanced control in compatible games.
  • Hot-swappable magnetic PCB supports easy switch changes without soldering, increasing customization options.
  • Software allows remapping, macro creation, and profile switching saved directly on the keyboard.

Build Quality and Design

  • Frosted translucent ABS case combined with a white aluminum plate offers a balance of durability and lightweight feel.
  • Gasket mount design with silicone modules improves typing comfort by reducing vibrations and noise.
  • Includes sound dampening layers such as porous foam between PCB and plate, and PU foam under the PCB, lowering typing noise.
  • Comes with screw-in stabilizers for stable larger keys and 1.7 mm thick dye-sublimated PBT keycaps for durability and consistent texture.
  • Interchangeable colorful silicone modules and feet allow visual customization and typing angle adjustments (3.5° or 6.5°).

Compatibility and Connectivity

  • ANSI layout with 81 keys supports standard US QWERTY users.
  • Switches easily between Windows and Mac layouts via keyboard shortcut.
  • Wired USB-C connection only; no wireless options available.
  • Supports RGB lighting with south-facing LEDs for better keycap compatibility.

Typing Experience

  • Magnetic switches provide smooth, consistent keypresses without physical contact noise or bounce.
  • Adjustable actuation reduces accidental keypresses and allows faster input when desired.
  • Sound dampening layers and gasket mount reduce typing noise, making it suitable for quieter environments.
  • Cherry profile keycaps offer a familiar, ergonomic shape preferred by many typists.

Trade-offs

  • Wired-only connectivity limits use cases where wireless is preferred.
  • Advanced features like Dynamic Keystrokes and Analog Mode require software setup and some learning curve.
  • Magnetic switches are less common, so switch options are limited to compatible magnetic types.
  • 75% layout may lack dedicated function row or navigation cluster preferred by some users.

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