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Lemokey X4 specifications and in-depth review

Lemokey X4

Manufacturer: Lemokey

The Lemokey X4 is a compact 75% mechanical gaming keyboard built around a gasket mount construction, which places the switch plate on a layer of dampening material to soften both sound and feel during typing. It ships in a black plastic case with a wired USB connection, a detachable cable, and adjustable feet for positioning flexibility. The board weighs 712 g and measures 325 mm wide by 145 mm deep, fitting comfortably within the footprint typical of the 75% form factor.

The X4 comes equipped with linear Keychron Red switches featuring a 2 mm actuation point, 45 g actuation force, and 4 mm total travel — and the hot-swappable PCB allows those switches to be replaced without soldering. Lighting is handled through south-facing RGB backlighting beneath double-shot ABS keycaps in an OEM profile. The layout follows the ANSI standard with media controls accessible via the Fn key and a rotary dial included for quick adjustments. On the firmware side, the keyboard supports NKRO and QMK, giving users full control over key mapping and macros, though VIA and ZMK are not supported.

Pros
  • Hot-swappable switches allow users to change out the Keychron Red linears without soldering, making switch customization straightforward
  • Gasket mount construction softens the feel and sound of each keypress compared to a rigid tray or top mount
  • QMK firmware support enables full key remapping and macro programming at a deep level
  • N-Key Rollover ensures every simultaneous keypress is accurately registered with no ghosting
  • The detachable cable reduces wear on the connection point and makes transport or cable replacement easier
  • A rotary dial provides quick physical control over adjustable functions without relying on key combinations
Cons
  • No VIA support means remapping requires familiarity with QMK tooling rather than a simpler graphical interface
  • Media controls are only accessible through the Fn layer, with no dedicated media keys on the board
  • ABS keycaps are prone to developing a shine on frequently used keys over time
  • No wrist rest is included, which may affect comfort during extended typing sessions
  • The one-year warranty period is relatively short for a mechanical keyboard
  • Lacks rapid trigger and adjustable actuation, features that some gaming-oriented users may specifically look for
Who is this for?

The Lemokey X4 is well-suited for PC gamers and enthusiast typists who want a compact 75% layout without sacrificing too many keys, keeping desk space manageable while retaining function row and arrow keys. The gasket mount and hot-swappable linear switches make it a solid choice for users who enjoy customizing their typing feel without committing to a soldering iron. Those comfortable working within the QMK ecosystem and who value N-Key Rollover for reliable input registration during fast-paced gaming sessions will find the feature set well-aligned with their needs.

Who is this NOT for?

Users who rely on dedicated media keys or a display for quick system control will find the Fn-layer-only media access and lack of onboard screen limiting. The board is also a poor fit for anyone seeking advanced gaming-oriented switch technology such as rapid trigger or adjustable actuation, as those features are absent. Additionally, users who prefer a plug-and-play remapping experience through VIA's graphical interface will be frustrated, since configuration here requires working directly within QMK tooling.

General info:

Keyboard type Gaming, Mechanical
Keyboard layout size Compact (75%)
Profile Standard
connectivity Wired
connection type USB
polling rate 1000 Hz
Mount type Gasket mount
designed for Mac ✕
has a detachable cable ✓
height 145 mm
width 325 mm
thickness 29.1 mm
weight 712 g
warranty period 1 years

The Lemokey X4 is a wired mechanical gaming keyboard in a compact 75% layout with a standard profile, connecting via USB with a detachable cable and polling at 1000 Hz. It uses a gasket mount for its internal construction and is not designed for Mac. Physically, the board measures 325 mm wide, 145 mm in height, and 29.1 mm thick, weighing 712 g — dimensions consistent with its compact form factor. The keyboard is backed by a one-year warranty.

Design:

has RGB lighting ✓
Has a backlit keyboard ✓
Case material Plastic
Case colors Black
has adjustable feet ✓
includes a wrist rest ✕
Backlight facing direction South-facing

The Lemokey X4 features a plastic case in black and includes a backlit keyboard with RGB lighting directed south-facing beneath the keycaps. The board comes with adjustable feet to allow for different typing angles, though no wrist rest is included in the package.

Switches:

Switch type Mechanical
Switch feel Linear
Hot-swappable switches ✓
Switch name Keychron Red Switch
Actuation distance (min) 2 mm
Actuation distance (max) 2 mm
Actuation force 45 g
Total travel distance 4 mm

The Lemokey X4 is fitted with Keychron Red Switches, a linear mechanical switch with a smooth, bump-free feel. Each switch actuates at 2 mm with a force of 45 g and has a total travel distance of 4 mm. The keyboard supports hot-swappable switches, meaning the switches can be pulled out and replaced without any soldering.

Features:

has analog input ✕
has rapid trigger ✕
has dual actuation ✕
has adjustable actuation ✕
has NKRO ✓
has USB passthrough ✕
Has a display ✕
has QMK support ✓
has ZMK support ✕
has VIA support ✕

The Lemokey X4 supports NKRO (N-Key Rollover), ensuring every simultaneous keypress is registered without ghosting, and includes QMK firmware support for deep key remapping and macro programming. It does not offer VIA or ZMK support, so configuration is handled through QMK tooling rather than a graphical interface. The board lacks analog input, rapid trigger, dual actuation, and adjustable actuation — features more common in hall-effect designs — and there is no USB passthrough port or onboard display.

Keys & layout:

Keyboard layout ANSI (United States)
Keycap type Double-shot, ABS
Keycap profile OEM
uses a standard key layout ✓
Media keys Via Fn key
has a rotary dial ✓

The Lemokey X4 uses an ANSI (United States) layout with a standard key arrangement, making it compatible with a wide range of aftermarket keycap sets. The keycaps are double-shot ABS in an OEM profile, where legends are formed through a two-layer molding process for durability. Media controls are accessible via the Fn key rather than dedicated keys, and the board includes a rotary dial for quick on-the-fly adjustments.

Final Verdict

The Lemokey X4 is a well-rounded 75% mechanical keyboard that strikes a clear balance between a compact footprint and practical functionality. Its gasket mount combined with hot-swappable Keychron Red switches gives it a solid foundation for users who care about both typing feel and the freedom to customize their switch setup without technical barriers. QMK support and N-Key Rollover round out a feature set that caters to enthusiasts and gamers who prefer depth of configuration over convenience shortcuts. Where it falls short — notably the absence of VIA support, rapid trigger, and dedicated media keys — reflects deliberate design choices that will suit some users and exclude others. Overall, the Lemokey X4 is a capable and customization-friendly compact keyboard that performs well within its intended scope, provided the user is comfortable with its firmware ecosystem.