What makes the Zuoya GMK21 Numpad different from other numpads?

The Zuoya GMK21 Numpad stands out with its compact design featuring 20 keys and a multifunctional knob, all while omitting dedicated macro keys to maximize your mouse space. Its 5-pin hot-swappable sockets allow for easy customization and switch replacement without soldering.

Can I customize the lighting on this numpad?

Yes! The numpad comes with multicolor backlighting that can be customized. Using compatible software like VIA or QMK, you can tailor the lighting effects and colors to your preference, enhancing both aesthetics and usability.

Is it possible to remap keys or program macros on the numpad?

Absolutely. The numpad supports VIA and QMK firmware, which enable extensive customization including key remapping and macro programming. This means you can tailor the numpad’s functionality to fit your workflow perfectly.

What does 5-pin hot-swappable sockets mean, and why is it beneficial?

5-pin hot-swappable sockets allow you to easily remove and replace mechanical switches without soldering. This feature offers great flexibility to try different switch types or replace faulty switches quickly, making maintenance and customization hassle-free.

Does the knob offer any special functions?

Yes, the knob on the numpad is a versatile control element. Depending on your configuration via VIA or QMK, it can be programmed for functions such as volume control, scrolling, zooming, or custom macros, adding an extra layer of convenience.

Will this numpad work seamlessly with my computer?

The Zuoya GMK21 Numpad is designed for broad compatibility and works well with most systems that support standard USB input devices. Its programmable firmware also allows you to customize key functions to suit your operating system and software needs.

How compact is this numpad compared to traditional models?

With only 20 keys and a knob, this numpad is significantly more compact than traditional full 23-key numpads. Its streamlined design focuses on essential functions while freeing up desk space, especially beneficial for users who want more room for mouse movement.

Zuoya GMK21 Numpad Starting at $34.99

Name: Zuoya GMK21 Numpad
Brand: Zuoya
SKU: gmk21-numpad-kit

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Zuoya GMK21 Numpad
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GMK21 Numpad Kit
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Compare Zuoya GMK21 Numpad vs Epomaker EK21 vs Keychron V4 Specification

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Model	Zuoya GMK21 Numpad	Epomaker EK21	Keychron V4
	80	84	92
Rating	0.0 stars (0 reviews)	4.5 stars (13 reviews)	5.0 stars (18 reviews)
Purchase Options
Main differences	Released in 2026	Released in 2025 Has Linear switch options Features N-key rollover Uses a Gasket Mount mounting style Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 1000 mAh battery Weighs about 200 g Sized at 29 x 138 x 93 mm Made with a ABS case Features PBT keycaps	Released in 2022 Has Linear, Tactile, Clicky switch options Available in a 60% layout Built with the ISO, JIS, ANSI, ISO-DE layout standard Provides dedicated media keys Includes screw-in stabilizers Uses a Tray Mount mounting style Supports Wired, Wired only connectivity Weighs about 730 g Sized at 20 x 117 x 304 mm Made with a Plastic, ABS case Features ABS, PBT, keycaps Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 59.9 Build Quality: 78.9 Productivity: 64.3 Customizability: 94.3 Portability: 65	Scores Performance: 77.3 Build Quality: 77.3 Productivity: 87.8 Customizability: 83.1 Portability: 88	Scores Performance: 66.6 Build Quality: 86.6 Productivity: 94.9 Customizability: 99.8 Portability: 74.8
Name	Name Zuoya GMK21 Numpad	Name Epomaker EK21	Name Keychron V4
Release year	Release year 2026	Release year 2025	Release year 2022
Switch Options	Switch Options -	Switch Options Linear	Switch Options Linear, Tactile, Clicky
Profile	Profile Normal Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size Numpad	Layout Size Numpad	Layout Size 60%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI	Layout Standard ISO, JIS, ANSI, ISO-DE
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough	USB passthrough
Connection	Connection	Connection Bluetooth, 2.4 GHz, Wired, Wireless	Connection Wired, Wired only
Polling Rate	Polling Rate -	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity -	Battery capacity 1000 mAh	Battery capacity -
Hall Effect Support	Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style -	Mount Style Gasket Mount	Mount Style Tray Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors	Case Colors
Case Material	Case Material -	Case Material ABS	Case Material Plastic, ABS
Keycaps Material	Keycaps Material -	Keycaps Material PBT	Keycaps Material ABS, PBT,
Dimensions	Dimensions -	Dimensions 29 x 138 x 93 mm	Dimensions 20 x 117 x 304 mm
Weight	Weight -	Weight 200g	Weight 730g

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Product Description

The Zuoya GMK21 Numpad is a compact mechanical numpad designed for users who want additional numeric input without sacrificing desk space. It suits those who need a small, efficient keypad for data entry or shortcuts but prefer a minimalist layout without dedicated macro keys. Its hot-swappable sockets and knob provide customization options for hobbyists and users who want flexible control.

Key Features

Hot-swappable 5-pin sockets allow easy switch replacement without soldering, enabling users to customize typing feel or repair switches quickly.
A rotary knob adds a tactile control option, useful for volume adjustment or other functions programmable via firmware.
Multicolor backlighting improves visibility in low-light environments and offers some aesthetic customization.
Compatibility with VIA and QMK firmware supports extensive key remapping and macro programming, despite the lack of dedicated macro keys.

Compatibility

The numpad works with standard operating systems supporting USB input. VIA and QMK compatibility means users can customize layouts and functions to fit different workflows or software needs.

Trade-offs

The layout excludes dedicated macro keys, which limits quick access to complex commands compared to some other numpads.
Its small size benefits desk space but may feel cramped for users who prefer a full-sized numpad or additional keys.
Connectivity type is unknown but likely wired; no wireless option is mentioned.

Use Cases

This numpad suits office workers, programmers, or creatives who need numeric input with some customization but want to maximize mouse space. It is less ideal for users who rely heavily on macros or prefer a larger keypad with more keys.

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