1. Úvod
This manual provides comprehensive instructions for the setup, operation, and maintenance of your A4tech FGK21C 2.4G Wireless Numeric Keypad. Please read this manual thoroughly before using the device to ensure proper functionality and longevity.
2. Obsah balení
Ověřte, zda jsou v balení přítomny všechny položky:
- A4tech FGK21C Wireless Numeric Keypad
- 2.4G USB přijímač
- Nabíjecí kabel USB typu C.
- Uživatelská příručka (tento dokument)
3. Konec produktuview
The A4tech FGK21C is a 2.4G wireless numeric keypad designed for enhanced productivity, featuring ultra-slim keycaps, a rechargeable battery, and dual-mode Num Lock functionality. It is compatible with Windows operating systems.

Obrázek 3.1: Přední view of the A4tech FGK21C numeric keypad, showing all keys and the FSTYLER branding.

Obrázek 3.2: Zkosená přední strana view of the A4tech FGK21C numeric keypad, highlighting its ergonomic design.

Obrázek 3.3: Strana view of the A4tech FGK21C numeric keypad, displaying the USB Type-C charging port and the power switch.
4. Nastavení
4.1. Charging the Keypad
- Connect the supplied USB Type-C charging cable to the charging port on the keypad.
- Druhý konec kabelu připojte k USB zdroji napájení (např. k USB portu počítače, USB adaptéru do zásuvky).
- The charging indicator light will illuminate. Once fully charged, the light may change color or turn off, depending on the keypad's design.
4.2. Connecting the Keypad
- Locate the 2.4G USB receiver. It is typically stored in a compartment on the keypad itself or included separately in the packaging.
- Plug the USB receiver into an available USB-A port on your computer. If your computer only has USB-C ports, use a USB-C to USB-A adapter (not included unless specified).
- Turn on the keypad using the power switch, usually located on the side or back of the device.
- The keypad should automatically connect to your computer. No additional drivers are typically required for Windows operating systems.
5. Návod k obsluze
5.1. Basic Keypad Usage
The numeric keypad functions like a standard 10-key pad. Simply press the desired number or operator keys to input data into your applications.
5.2. Dual Mode Num Lock
The FGK21C features a dual-mode Num Lock function. This means the Num Lock key on the keypad operates independently of your main keyboard's Num Lock. This allows you to use the numeric keypad for number input while your main keyboard's Num Lock is off, or vice-versa.
- Stiskněte tlačítko Num Lock / Clear key once to activate or deactivate the numeric input mode.
- When Num Lock is active, the numeric keys (0-9) will input numbers.
- When Num Lock is inactive, the keys will function as navigation keys (e.g., Home, End, Pg Up, Pg Dn, Insert, Delete) as indicated by the secondary legends on the keycaps.
6. Údržba
6.1. Čištění
To clean the keypad, gently wipe the surface with a soft, damp cloth. Avoid using harsh chemicals or abrasive materials, as these can damage the finish or keycap legends. Ensure the keypad is powered off before cleaning.
6.2. Péče o baterie
The keypad contains a built-in rechargeable lithium-ion battery. To prolong battery life:
- Vyhněte se častému úplnému vybíjení baterie.
- Pokud klávesnici delší dobu nepoužíváte, skladujte ji na chladném a suchém místě.
- Charge the keypad regularly, even if not used daily.
7. Řešení problémů
7.1. Keypad Not Responding
- Ensure the keypad is powered on.
- Zkontrolujte, zda je USB přijímač bezpečně zapojený do funkčního USB portu v počítači.
- Verify that the keypad's battery is charged. Connect it to a power source using the USB Type-C cable.
- Zkuste zapojit USB přijímač do jiného USB portu.
- Restartujte počítač.
7.2. Přerušované připojení
- Ensure the keypad is within the effective range (up to 10-15 meters) of the USB receiver.
- Minimize obstructions between the keypad and the receiver, such as large metal objects.
- Neumisťujte přijímač do blízkosti jiných bezdrátových zařízení, která by mohla způsobovat rušení (např. Wi-Fi routery, bezdrátové telefony).
7.3. Num Lock Not Working as Expected
- Remember that the keypad's Num Lock operates independently. Press the Num Lock / Clear key on the numeric keypad to toggle its state.
- Ensure the keypad is properly connected and powered on.
8. Specifikace

Obrázek 8.1: Diagram showing the dimensions of the A4tech FGK21C numeric keypad (124mm width, 187mm length, 24mm thickness).
| Funkce | Detail |
|---|---|
| Název modelu | FGK21C |
| Značka | A4tech |
| Technologie připojení | 2.4 GHz Wireless (USB-A, USB-C Adaptor) |
| Kompatibilní zařízení | PC (Windows) |
| Popis klávesnice | Membrane, Ultra-Slim Keycaps |
| Speciální funkce | Ergonomic, Rechargeable, Dual Mode Num Lock |
| Zdroj napájení | 1 Lithium Ion battery (included, built-in) |
| Bezdrátové Dosah | 10-15 metry |
| Hmotnost položky | 4.8 unce |
| Rozměry balení | 7.25 x 5.5 x 1.5 palce |
| Datum první dostupnosti | 23. května 2024 |
9. Záruka a podpora
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official A4tech webUschovejte si doklad o koupi pro případ reklamace.





