Click the coupon code for a discount. Features and specs may vary by model version.
The price history chart tracks the lowest price over time across all stores, excluding Amazon (shipping costs not included).
| zFrontier HX 40 | PromoType Key Boy Advance 50 KBA50 | KBDFans Tofu60 V2 |
64 Overall/ Value 63.7Build Quality 68.1Customizability 66.8Performance 50.6Productivity 56.8Portability 84.7![]() | 90 Overall/ Value 90.2Build Quality 100.0Customizability 84.6Performance 41.3Productivity 82.0Portability 70.9![]() | |
0.0 stars (0 reviews) | 0.0 stars (0 reviews) | 0.0 stars (0 reviews) |
|
|
|
Scores
| Scores
| Scores
|
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 |
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.