1. Inleiding
This manual provides detailed instructions for the A4 Tech FBX50C Rechargeable Keyboard. This keyboard features dual-mode wireless connectivity (Bluetooth and 2.4GHz), a rechargeable battery, and a durable, ergonomic design. It is compatible with Windows, Mac OS, iOS, and Android operating systems.

Afbeelding: Van boven naar beneden view of the A4 Tech FBX50C keyboard, showcasing its full layout with function keys and numeric pad.
Belangrijkste kenmerken:
- Bluetooth & 2.4Ghz Dual-Mode Wireless Connectivity
- Compatible with Windows, Mac OS, iOS, and Android OS
- Oplaadbare 300 mAh lithiumbatterij
- Water-resistant design with drain channels
- Low-proffile chocolate keys for comfortable typing
- Easy switching between up to 4 devices
2. Inhoud van het pakket
Controleer bij het uitpakken de inhoud van het pakket om er zeker van te zijn dat alle artikelen aanwezig zijn:
- A4 Tech FBX50C Wireless Keyboard
- USB Type-C Charging Cable (USB-Type C to USB-Type A)
- 2.4G USB Nano-RF Receiver (typically stored in the keyboard's dedicated compartment)

Image: Diagram highlighting key features such as the X-Key structure, the storage compartment for the Nano Receiver, and the integrated rechargeable battery.
3. Instellen
3.1 Het toetsenbord opladen
- Zoek de USB Type-C-oplaadpoort op het toetsenbord.
- Connect the provided USB Type-C cable to the keyboard and the USB-Type A end to a power source (e.g., computer USB port, USB wall adapter).
- Het oplaadlampje gaat branden. Volledig opladen duurt ongeveer 2.5 uur.
- Once fully charged, the indicator light may change or turn off. Disconnect the cable.
The keyboard is equipped with a built-in 300mAh Lithium Battery, offering up to 8 months of battery life depending on usage and operating conditions.
3.2 In-/uitschakelen
Locate the Power On/Off button, typically on the side or back of the keyboard. Slide it to the 'On' position to power on the keyboard and 'Off' to power it down.
3.3 Verbinding maken via 2.4 GHz draadloos
- Retrieve the 2.4G USB Nano-RF Receiver from its storage compartment on the keyboard (if applicable).
- Plug the USB Nano-RF Receiver into an available USB port on your computer or device.
- Ensure the keyboard is powered on. The keyboard should automatically connect to the receiver.
- The 2.4G wireless connection offers a coverage range of up to 10 meters.
3.4 Verbinding maken via Bluetooth
The FBX50C supports Bluetooth v5.0, v4.0, and v3.0, allowing connection to up to 3 Bluetooth devices (BT1, BT2, BT3) in addition to the 2.4G connection (2.4G).
- Selecteer een Bluetooth-kanaal: Press the dedicated Bluetooth channel key (e.g., BT1, BT2, of BT3) on the keyboard. The indicator light for the selected channel will blink.
- Ga naar de koppelingsmodus: Press and hold the selected Bluetooth channel key for 3-5 seconds until the indicator light blinks rapidly, indicating it's in pairing mode.
- Bluetooth inschakelen op uw apparaat: On your computer, tablet, or smartphone, go to Bluetooth settings and turn on Bluetooth.
- Zoeken naar Apparaten: Your device will scan for available Bluetooth devices. Select "A4 Tech FBX50C" or a similar name from the list.
- Volledige koppeling: Follow any on-screen prompts to complete the pairing process. The indicator light on the keyboard will become solid or turn off once successfully paired.
4. Gebruiksaanwijzing
4.1 Schakelen tussen verbonden apparaten
The FBX50C keyboard allows for easy switching between up to four connected devices (one 2.4G and three Bluetooth). Simply press the corresponding channel key:
- Pers 2.4G to switch to the device connected via the USB Nano-RF Receiver.
- Pers BT1 to switch to the first Bluetooth-connected device.
- Pers BT2 to switch to the second Bluetooth-connected device.
- Pers BT3 to switch to the third Bluetooth-connected device.
4.2 Function Keys (F1-F12) and Multimedia Controls
The keyboard features F1-F12 function keys that also serve as multimedia and internet control keys. To activate the secondary function (e.g., volume control, media playback), press the Fn toets tegelijk met de gewenste F-toets indrukken.
- Fn + F1-F12: Access various multimedia and system functions as indicated by the icons on the keys.
- Multimedia toetsen: Dedicated keys for volume up/down, mute, play/pause, previous/next track.
4.3 Compatibiliteit met besturingssystemen
The keyboard is designed to be compatible with a wide range of operating systems:
- Windows (Windows 10, Windows 8, etc.)
- Mac OS
- iOS
- Android-besturingssysteem
5. Onderhoud
5.1 Het toetsenbord schoonmaken
Om het uiterlijk en de functionaliteit van het toetsenbord te behouden:
- Zorg ervoor dat het toetsenbord is uitgeschakeld voordat u het schoonmaakt.
- Gebruik een zachte, pluisvrije doek die lichtjes is schoongemaakt.ampmet water of een milde reinigingsoplossing.
- Zorg dat het toetsenbord niet te vochtig wordt en spuit reinigingsmiddelen niet rechtstreeks op het toetsenbord.
- The keyboard features specially designed drain channels for water resistance, but it is not fully waterproof. Avoid submerging it in liquids.
5.2 Batterijonderhoud
To prolong the life of the built-in Lithium battery:
- Zorg ervoor dat de batterij niet te vaak volledig ontladen wordt.
- Charge the keyboard regularly, especially if it will be stored for an extended period.
- Bewaar het toetsenbord op een koele, droge plaats.

Afbeelding: Onder view of the A4 Tech FBX50C keyboard, illustrating the drain channels for water resistance and the anti-slip rubber feet.
6. Probleemoplossing
If you encounter issues with your A4 Tech FBX50C keyboard, please refer to the following common solutions:
- Toetsenbord reageert niet:
- Zorg ervoor dat het toetsenbord is ingeschakeld.
- Controleer het batterijniveau en laad het toetsenbord indien nodig op.
- Verify that the correct connection mode (2.4G or BT1/BT2/BT3) is selected.
- For 2.4G connection, ensure the USB Nano-RF Receiver is securely plugged into your device.
- For Bluetooth connection, ensure Bluetooth is enabled on your device and the keyboard is properly paired. Try re-pairing if necessary.
- Try connecting the keyboard to a different USB port or a different device to rule out device-specific issues.
- Keys not working or typing incorrectly:
- Maak het toetsenbord schoon om eventueel vuil te verwijderen dat de toetsen blokkeert.
- Ensure the correct language and keyboard layout are selected in your operating system settings.
- Onderbroken verbinding:
- Plaats het toetsenbord dichter bij uw apparaat om interferentie te verminderen.
- Avoid placing the keyboard near other wireless devices that might cause interference (e.g., Wi-Fi routers, cordless phones).
- Zorg ervoor dat het toetsenbord volledig is opgeladen.
7. Specificaties
| Functie | Detail |
|---|---|
| Model | FBX50C |
| Connectiviteit | Bluetooth (v5.0, v4.0, v3.0) & 2.4GHz Wireless |
| Compatibiliteit met besturingssystemen | Windows 10, Windows 8, Mac OS, iOS, Android OS |
| Batterijtype | Ingebouwde 300mAh lithiumbatterij |
| Oplaadtijd | Ongeveer 2.5 uur |
| Levensduur van de batterij | Up to 8 Months (may vary) |
| Wireless Range | Up to 10 meters (2.4G) |
| Toetsenbordindeling | QWERTY (English, based on images) |
| Speciale kenmerken | Water Resistant (drain channels), Ergonomic, Rechargeable, Low-profile sleutels |
| Materiaal | Kunststof siliconen |
| Kleur | Zwart/Grijs |
| Afmetingen (L x B x H) | 421 x 121 x 20 mm (approximate, based on description) |
| Gewicht | 488g (based on description) / 800g (package weight) |
8. Garantie en ondersteuning
8.1 Garantie-informatie
Specific warranty details for the A4 Tech FBX50C keyboard are not provided in this manual. Please refer to the warranty card included with your product or contact your retailer for information regarding warranty coverage and terms.
8.2 Klantenservice
For further assistance, technical support, or inquiries not covered in this manual, please contact A4tech customer service or visit the official A4tech website voor ondersteuningsbronnen.