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Lemokey X4 QMK Wired Mechanical Keyboard

Keychron Lemokey X4

The Keychron X4 is a wired 75% mechanical keyboard designed for users who want a balance between compact layout and full functionality. It suits gamers needing low input latency and typists who prefer a flexible typing experience with customizable firmware. Its gasket mount design and high polling rate support both work and gaming environments.</p... Read more
Compare prices from $34.00 to $39
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Lemokey X4 QMK Wired Mechanical Keyboard

Keychron Lemokey X4 - Red Backlight / Purple (Side-Printed Shine-Through) / Keychron Mechanical Red Switch
Keychron
Ships to US
$39
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Compare Keychron Lemokey X4 vs AULA HERO84 vs MCHOSE G75 Pro Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
Keychron Lemokey X4AULA HERO84MCHOSE G75 Pro
86
Lemokey X4 QMK Wired Mechanical Keyboard
-37% off
75
AULA HERO84 Magnetic Switch Gaming Keyboard with 8K Polling Rate
-10% off
74
MCHOSE G75 Pro Tri-mode Gasket Structure Gaming Mechanical Keyboard
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  • Has Linear, Tactile, Clicky switch options
  • Comes with a knob
  • Supports QMK firmware
  • Includes screw-in stabilizers
  • Runs at a 1000 Hz polling rate
  • Weighs about 712 g
  • Sized at 41 x 325 x 145 mm
  • Made with a ABS, Plastic case
  • Features ABS, PBT keycaps
  • Offers Yes, South-face, North-face RGB lighting
  • Released in 2025
  • Has Magnetic switch options
  • Utilizes Hall effect sensors
  • Uses a Tray Mount mounting style
  • Runs at a 8000 Hz polling rate
  • Weighs about 910 g
  • Sized at 43 x 322 x 138 mm
  • Made with a ABS case
  • Has Linear switch options
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Sized at 42 x 139 x 322 mm
  • Made with a Aluminum case
  • Features PBT keycaps
Scores
  • Performance: 74.7
  • Build Quality: 82.2
  • Productivity: 95.4
  • Customizability: 83.1
  • Portability: 65.6
Scores
  • Performance: 91.5
  • Build Quality: 64.8
  • Productivity: 83.6
  • Customizability: 68.5
  • Portability: 65.4
Scores
  • Performance: 63.8
  • Build Quality: 74.5
  • Productivity: 75.8
  • Customizability: 68.8
  • Portability: 80.9
Name
Keychron Lemokey X4
Name
AULA HERO84
Name
MCHOSE G75 Pro
Release year
2024
Release year
2025
Release year
2024
Switch Options
Linear, Tactile, Clicky
Switch Options
Magnetic
Switch Options
Linear
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
Layout Standard
ANSI
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
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
8000 Hz
Polling Rate
-
Battery capacity
-
Battery capacity
-
Battery capacity
-
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
 
South-face, North-face
Backlight
 
Rgb, South-face
Backlight
 
Rgb, South-face
Case Colors
Case Colors
Case Colors
Case Material
ABS, Plastic
Case Material
ABS
Case Material
Aluminum
Keycaps Material
ABS, PBT
Keycaps Material
-
Keycaps Material
PBT
Dimensions
41 x 325 x 145 mm
Dimensions
43 x 322 x 138 mm
Dimensions
42 x 139 x 322 mm
Weight
712g
Weight
910g
Weight
-
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Product Description

The Keychron X4 is a wired 75% mechanical keyboard designed for users who want a balance between compact layout and full functionality. It suits gamers needing low input latency and typists who prefer a flexible typing experience with customizable firmware. Its gasket mount design and high polling rate support both work and gaming environments.

Key Features

  • 1000 Hz polling rate reduces input delay, beneficial for fast-paced gaming.
  • QMK open-source firmware allows extensive key remapping, macros, and lighting customization through a web app.
  • Two keycap options: OEM profile ABS or Cherry profile PBT, both double-shot for durability and shine-through lighting.
  • Multiple red backlight modes provide visual variety without overwhelming brightness.
  • Pre-lubed Keychron mechanical switches offer a smooth and consistent typing feel out of the box.

Build Quality

  • Gasket mount with a polycarbonate plate improves typing acoustics and adds slight flex for comfort.
  • ABS plastic case with an aluminum knob combines lightweight construction with a tactile control element.
  • Adjustable typing angles (4°, 8°, 10°) and curved keycaps support ergonomic hand positioning for extended use.
  • Plate-mounted stabilizers reduce key wobble on larger keys.

Connectivity and Compatibility

  • Wired USB Type-C connection ensures stable and low-latency input.
  • Compatible with Windows, macOS, and Linux systems, supporting broad user environments.
  • Cable routing options on the case allow flexible desk setups.

Typing Experience

  • Gasket mount design softens keystroke impact, reducing finger fatigue and producing a quieter sound profile.
  • Pre-lubed switches enhance smoothness, though clicky switch lubrication is not included.
  • Keycap profile choice affects typing feel and sound; ABS keycaps may wear faster than PBT.

Trade-offs

  • No wireless connectivity, limiting portability and multi-device use.
  • Backlighting limited to red LEDs, which may not suit users wanting full RGB customization.
  • ABS plastic case may feel less sturdy compared to metal alternatives.
  • Unknown noise level compared to other gasket mount keyboards, so sound preference may vary.

Frequently Asked Questions (FAQ)

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