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| Keychron Q0 Max | MelGeek O2 | MMD KM21 Ultra |
92 Overall/ Value 91.6Build Quality 88.4Customizability 96.2Performance 78.0Productivity 94.7Portability 87.2![]() | 85 Overall/ Value 85.1Build Quality 81.8Customizability 88.6Performance 66.7Productivity 89.4Portability 85.5![]() | |
5.0 stars (4 reviews) | 0.0 stars (0 reviews) | 0.0 stars (0 reviews) |
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Name Keychron Q0 Max | Name MelGeek O2 | Name MMD KM21 Ultra |
Release year 2024 | Release year 2025 | Release year 2026 |
Switch Options Linear, Tactile, Clicky | Switch Options - | Switch Options - |
Profile Normal Profile | Profile Normal Profile | Profile Normal Profile |
Hot Swappable | Hot Swappable | Hot Swappable |
Layout Size Numpad | Layout Size Numpad | Layout Size Numpad |
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 Bluetooth, 2.4 GHz, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless | Connection Bluetooth, 2.4 GHz, Wired, Wireless |
Polling Rate 1000 Hz | Polling Rate 1000 Hz | Polling Rate - |
Battery capacity 1800 mAh | Battery capacity 2500 mAh | Battery capacity 980 mAh |
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 Gasket Mount | Mount Style Top Mount |
Screw in Stabilizers | Screw in Stabilizers | Screw in Stabilizers |
Sound Dampening | Sound Dampening | Sound Dampening |
Backlight Rgb, South-face | Backlight Rgb, North-face | Backlight Rgb |
Case Colors | Case Colors | Case Colors |
Case Material Aluminum | Case Material Aluminum, Polycarbonate, ABS | Case Material Aluminum |
Keycaps Material PBT | Keycaps Material PBT | Keycaps Material - |
Dimensions 22 x 118 x 137 mm | Dimensions 135 x 326 x 27 mm | Dimensions - |
Weight 684g | Weight 650g | Weight - |
The Keychron Q0 Max Numpad is a compact 26-key mechanical numpad designed for users who want a high-quality, customizable numeric keypad with versatile connectivity. It suits professionals needing a reliable external numpad for data entry or shortcuts, hobbyists who value switch swapping, and those who want wireless or wired options in a small form factor.