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[In Stock] HX-40 40% MX/EC Keyboard kit

zFrontier HX 40 Mechanical Keyboard

The zFrontier HX 40 MX is a compact 40% mechanical keyboard kit designed for users who want a minimal desk footprint and enjoy customizing their typing setup. It supports hot-swappable MX-style switches, allowing easy switch changes without soldering. This keyboard suits hobbyists who value flexibility in layout and switch options, and those who prefer wired or wireless connectivity depending on the PCB version chosen.</p... Read more
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[In Stock] HX-40 40% MX/EC Keyboard kit

zFrontier
zFrontier
Ships to US
$274
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Compare zFrontier HX 40 vs PromoType Key Boy Advance 50 KBA50 vs KBDFans Tofu60 V2 Specification

Compare similar keyboards side by side, or use the comparison table to compare all keyboards!
zFrontier HX 40PromoType Key Boy Advance 50 KBA50KBDFans Tofu60 V2
[In Stock] HX-40 40% MX/EC Keyboard kit
64
[Pre Order] PromoType Key Boy Advance 50 KBA50 Keyboard Kit
90
Tofu60 2.0 - Image: 6
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0.0 (0)
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  • Available in a 40% layout
  • Available in a 50% layout
  • Supports VIAL configuration
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 1000 mAh battery
  • Sized at 33 x 251 x 119 mm
  • Made with a Aluminum, Polycarbonate case
  • Released in 2023
  • Available in a 60% layout
  • Built with the ANSI, ISO, JIS, ISO-UK, Workman layout standard
  • Offers Normal ergonomics
  • Supports QMK firmware
  • Supports VIA configuration
  • Includes screw-in stabilizers
  • Has built-in sound dampening
  • Sized at 33 x 116 x 295 mm
  • Made with a Aluminum, Plastic, Steel, Metal, Wood, ABS, PBT, POM, Polycarbonate, Acrylic, Brass, Silicone, Carbon Fiber, Copper, Resin, Ceramic, Magnesium case
Scores
  • Performance: 46.4
  • Build Quality: 48.5
  • Productivity: 46.8
  • Customizability: 56.9
  • Portability: 66
Scores
  • Performance: 50.6
  • Build Quality: 68.1
  • Productivity: 56.8
  • Customizability: 66.8
  • Portability: 84.7
Scores
  • Performance: 41.3
  • Build Quality: 100
  • Productivity: 82
  • Customizability: 84.6
  • Portability: 70.9
Name
zFrontier HX 40
Name
PromoType Key Boy Advance 50 KBA50
Name
KBDFans Tofu60 V2
Release year
2026
Release year
2026
Release year
2023
Switch Options
-
Switch Options
-
Switch Options
-
Profile
Normal Profile
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Hot Swappable
 
Layout Size
40%
Layout Size
50%
Layout Size
60%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Standard
ANSI, ISO, JIS, ISO-UK, Workman
Layout Ergonomics
Split Spacebar
Layout Ergonomics
Split Spacebar
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
Wired, Wired only
Polling Rate
-
Polling Rate
-
Polling Rate
-
Battery capacity
-
Battery capacity
1000 mAh
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
-
Mount Style
Top Mount
Mount Style
Top Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Backlight
 
Backlight
 
Case Colors
Case Colors
Case Colors
Case Material
-
Case Material
Aluminum, Polycarbonate
Case Material
Aluminum, Plastic, Steel, Metal, Wood, ABS, PBT, POM, Polycarbonate, Acrylic, Brass, Silicone, Carbon Fiber, Copper, Resin, Ceramic, Magnesium
Keycaps Material
-
Keycaps Material
-
Keycaps Material
-
Dimensions
-
Dimensions
33 x 251 x 119 mm
Dimensions
33 x 116 x 295 mm
Weight
-
Weight
1400g
Weight
1400g
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Product Description

The zFrontier HX 40 MX is a compact 40% mechanical keyboard kit designed for users who want a minimal desk footprint and enjoy customizing their typing setup. It supports hot-swappable MX-style switches, allowing easy switch changes without soldering. This keyboard suits hobbyists who value flexibility in layout and switch options, and those who prefer wired or wireless connectivity depending on the PCB version chosen.

Key Features

  • Hot-swappable MX switch support enables quick switch replacement and experimentation without soldering.
  • Multiple PCB options include wired-only, dual mode (wired and wireless), and tri mode (wired, Bluetooth, and another wireless mode), offering connectivity flexibility.
  • Variety of plate layouts with different enter and spacebar key configurations allow users to select a layout that fits their typing preferences.
  • Includes batteries and accessories with EC (electro-capacitive) PCB versions, supporting wireless use out of the box.

Build Quality

  • Case features a two-tone design with a classic beige top and green bottom piece, providing a distinct aesthetic.
  • Unknown case material and mounting style, limiting assessment of durability and typing feel impact.

Connectivity

  • Wired-only PCB option suits users prioritizing stable, low-latency connections.
  • Dual and tri mode PCBs add wireless functionality, including Bluetooth, for flexible use in different environments.
  • Battery inclusion with EC PCBs supports wireless use without additional purchases.

Trade-offs

  • Small 40% layout reduces key count significantly, which may require frequent layer use and key remapping, less ideal for users needing full key access.
  • Unknown details on case material and mounting style limit insight into typing acoustics and durability.
  • Wireless performance specifics, such as latency and battery life, are not provided.

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