Keychron

Lemokey X4 QMK Wired Mechanical Keyboard 75% Brown Switch US Layout (Boxed)

SKU 40089 Brand Keychron EAN13 4895248862901
QMK/VIA mechanical gaming keyboard with 75% compact layout, 1000 Hz polling rate, gasket mount structure, PC plate, and shine-through double-shot keycaps for gaming and work.
Keyboards - Device Type Gaming Keyboard
Keyboards - Special Features Hot Swappable Programmable Keys
Keyboards - Form Factor Compact (60% / 65% / 75%)
Keyboards - Key Layout US
Keyboards - Switch Type Mechanical - Tactile
Keyboards - Connection Wired (USB)
Keyboards - Backlighting South-facing RGB

The Lemokey X4 is a premium QMK/VIA mechanical gaming keyboard featuring a 75% compact layout and an impressive 1000 Hz polling rate for competitive gaming. Its gasket-mount structure combined with a PC plate delivers superior typing feel and acoustics, while the high-performance ARM Cortex-M4 MCU (STM32F402RC with 256KB Flash) enables extensive customization through open-source QMK firmware and the Lemokey Launcher web application.

This keyboard offers exceptional build quality with shine-through double-shot keycaps available in two profiles: OEM Profile ABS (black) and Cherry Profile PBT (purple). The south-facing red backlight features 14+ lighting modes including flashing, breathing, and static effects. Advanced N-key rollover anti-ghosting technology ensures accurate keypress registration regardless of simultaneous inputs, providing the competitive edge needed for demanding gaming scenarios. The aluminum knob and adjustable typing angles (4°, 8°, 10°) provide ergonomic support for extended use.

What's Included:

  • 1x Fully Assembled Keyboard
  • 1x Type-A to Type-C Cable
  • 1x Keycap Puller
Layout75% (Compact)
Connection TypeWired USB (Type-A to Type-C)
Polling Rate1000 Hz
MCUSTM32F402RC (ARM Cortex-M4 32-bit)
Flash Memory256 KB
ProgrammabilityQMK/VIA with Lemokey Launcher Web App
Mount StructureGasket Mount
Plate MaterialPC (Polycarbonate)
Body MaterialABS Plastic
Keycap ProfileOEM (ABS) / Cherry (PBT) - Double-Shot Shine-Through
Keycap MaterialABS or PBT (depending on variant)
BacklightSouth-Facing Red LED with 14+ Modes
Anti-GhostingN-Key Rollover
Feet Height1.2 mm
Typing Angle4° / 8° / 10° (Adjustable)
Compatible SystemsWindows / Linux / macOS
Switch TypeMechanical Brown (Pre-Lubed)
Key LayoutUS ANSI
Included AccessoriesType-A to Type-C Cable, Keycap Puller