1. Ifihan
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. Package Awọn akoonu
Jẹrisi pe gbogbo awọn ohun kan wa ninu package:
- A4tech FGK21C Wireless Numeric Keypad
- 2.4G USB olugba
- USB Iru-C Ngba agbara USB
- Afowoyi Olumulo (iwe-ipamọ yii)
3. Ọja Ipariview
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.

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

Aworan 3.2: Angled iwaju view of the A4tech FGK21C numeric keypad, highlighting its ergonomic design.

Aworan 3.3: Apa view of the A4tech FGK21C numeric keypad, displaying the USB Type-C charging port and the power switch.
4. Eto
4.1. Charging the Keypad
- Connect the supplied USB Type-C charging cable to the charging port on the keypad.
- So opin okun miiran pọ si orisun agbara USB (fun apẹẹrẹ, ibudo USB kọnputa, ohun ti nmu badọgba ogiri USB).
- 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. Síso Páápù Ìbáṣepọ̀
- 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. Awọn ilana Iṣiṣẹ
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.
- Tẹ awọn 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. Itọju
6.1. Ninu
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. Itọju batiri
The keypad contains a built-in rechargeable lithium-ion battery. To prolong battery life:
- Yago fun gbigba agbara si batiri ni kikun nigbagbogbo.
- Store the keypad in a cool, dry place when not in use for extended periods.
- Charge the keypad regularly, even if not used daily.
7. Laasigbotitusita
7.1. Bọ́ọ́dù kò dáhùn
- Rí i dájú pé keyboard náà ti ṣiṣẹ́.
- Ṣàyẹ̀wò bóyá a so olugba USB mọ́ ibudo USB tó ń ṣiṣẹ́ lórí kọ̀ǹpútà rẹ dáadáa.
- Verify that the keypad's battery is charged. Connect it to a power source using the USB Type-C cable.
- Gbiyanju lati so olugba USB sinu ibudo USB ti o yatọ.
- Tun kọmputa rẹ bẹrẹ.
7.2. Ìsopọ̀ Lẹ́ẹ̀kan síi
- 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.
- Avoid placing the receiver near other wireless devices that might cause interference (e.g., Wi-Fi routers, cordless phones).
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. Awọn pato

Aworan 8.1: Diagram showing the dimensions of the A4tech FGK21C numeric keypad (124mm width, 187mm length, 24mm thickness).
| Ẹya ara ẹrọ | Ẹ̀kúnrẹ́rẹ́ |
|---|---|
| Orukọ awoṣe | FGK21C |
| Brand | A4tech |
| Asopọmọra Technology | 2.4 GHz Wireless (USB-A, USB-C Adaptor) |
| Awọn ẹrọ ibaramu | PC (Windows) |
| Apejuwe Keyboard | Membrane, Ultra-Slim Keycaps |
| Pataki Awọn ẹya ara ẹrọ | Ergonomic, Rechargeable, Dual Mode Num Lock |
| Orisun agbara | 1 Lithium Ion battery (included, built-in) |
| Alailowaya Ibiti | 10-15 mita |
| Iwọn Nkan | 4.8 iwon |
| Package Mefa | 7.25 x 5.5 x 1.5 inches |
| Ọjọ Akọkọ Wa | Oṣu Karun ọjọ 23, Ọdun 2024 |
9. Atilẹyin ọja ati Support
For warranty information and technical support, please refer to the documentation provided with your purchase or visit the official A4tech webojula. Jeki ẹri rira rẹ fun awọn iṣeduro atilẹyin ọja.