1. Introduktion
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.

Billede: Top-down view of the A4 Tech FBX50C keyboard, showcasing its full layout with function keys and numeric pad.
Nøglefunktioner:
- Bluetooth & 2.4Ghz Dual-Mode Wireless Connectivity
- Compatible with Windows, Mac OS, iOS, and Android OS
- Genopladeligt 300mAh lithiumbatteri
- Water-resistant design with drain channels
- Lav-profile chocolate keys for comfortable typing
- Easy switching between up to 4 devices
2. Pakkens indhold
Kontroller venligst pakkens indhold ved udpakning for at sikre, at alle varer er til stede:
- 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. Opsætning
3.1 Opladning af tastaturet
- Locate the USB Type-C charging port on the keyboard.
- 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).
- Opladningsindikatorlampen lyser. En fuld opladning tager cirka 2.5 timer.
- 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 Tænd/sluk
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 Tilslutning via 2.4 GHz trådløst netværk
- 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 Tilslutning 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).
- Vælg en Bluetooth-kanal: Press the dedicated Bluetooth channel key (e.g., BT1, BT2, eller BT3) on the keyboard. The indicator light for the selected channel will blink.
- Gå ind i parringstilstand: Press and hold the selected Bluetooth channel key for 3-5 seconds until the indicator light blinks rapidly, indicating it's in pairing mode.
- Aktivér Bluetooth på din enhed: On your computer, tablet, or smartphone, go to Bluetooth settings and turn on Bluetooth.
- Søg efter Enheder: Your device will scan for available Bluetooth devices. Select "A4 Tech FBX50C" or a similar name from the list.
- Fuld parring: 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. Betjeningsvejledning
4.1 Skift mellem tilsluttede enheder
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:
- Trykke 2.4G to switch to the device connected via the USB Nano-RF Receiver.
- Trykke BT1 for at skifte til den første Bluetooth-tilsluttede enhed.
- Trykke BT2 for at skifte til den anden Bluetooth-tilsluttede enhed.
- Trykke 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 tasten samtidigt med den ønskede F-tast.
- Fn + F1-F12: Access various multimedia and system functions as indicated by the icons on the keys.
- Multimedienøgler: Dedicated keys for volume up/down, mute, play/pause, previous/next track.
4.3 Operativsystemkompatibilitet
The keyboard is designed to be compatible with a wide range of operating systems:
- Windows (Windows 10, Windows 8, etc.)
- Mac OS
- iOS
- Android OS
5. Vedligeholdelse
5.1 Rengøring af tastaturet
Sådan bevarer du tastaturets udseende og funktionalitet:
- Sørg for, at tastaturet er slukket, inden rengøring.
- Brug en blød, fnugfri klud lidt dampafsluttes med vand eller en mild rengøringsopløsning.
- Undgå for meget fugt, og sprøjt ikke rengøringsmidler direkte på tastaturet.
- The keyboard features specially designed drain channels for water resistance, but it is not fully waterproof. Avoid submerging it in liquids.
5.2 Pleje af batterier
To prolong the life of the built-in Lithium battery:
- Undgå at aflade batteriet helt ofte.
- Oplad tastaturet regelmæssigt, især hvis det skal opbevares i længere tid.
- Opbevar tastaturet et køligt og tørt sted.

Billede: Bund view of the A4 Tech FBX50C keyboard, illustrating the drain channels for water resistance and the anti-slip rubber feet.
6. Fejlfinding
If you encounter issues with your A4 Tech FBX50C keyboard, please refer to the following common solutions:
- Tastaturet reagerer ikke:
- Sørg for, at tastaturet er tændt.
- Kontrollér batteriniveauet, og oplad tastaturet om nødvendigt.
- 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.
- Taster virker ikke eller skrives forkert:
- Rengør tastaturet for at fjerne eventuelle snavs, der måtte blokere tasterne.
- Ensure the correct language and keyboard layout are selected in your operating system settings.
- Intermitterende forbindelse:
- Flyt tastaturet tættere på din enhed for at reducere interferens.
- Undgå at placere tastaturet i nærheden af andre trådløse enheder, der kan forårsage interferens (f.eks. Wi-Fi-routere, trådløse telefoner).
- Sørg for, at tastaturet er fuldt opladet.
7. Specifikationer
| Feature | Detalje |
|---|---|
| Model | FBX50C |
| Forbindelse | Bluetooth (v5.0, v4.0, v3.0) & 2.4GHz Wireless |
| Operativsystemkompatibilitet | Windows 10, Windows 8, Mac OS, iOS, Android OS |
| Batteritype | Indbygget 300mAh lithiumbatteri |
| Opladningstid | Ca. 2.5 timer |
| Batterilevetid | Up to 8 Months (may vary) |
| Wireless Range | Up to 10 meters (2.4G) |
| Tastaturlayout | QWERTY (English, based on images) |
| Særlige funktioner | Water Resistant (drain channels), Ergonomic, Rechargeable, Low-profile nøgler |
| Materiale | Plast silikone |
| Farve | Sort/Grå |
| Dimensioner (L x B x H) | 421 x 121 x 20 mm (approximate, based on description) |
| Vægt | 488g (based on description) / 800g (package weight) |
8. Garanti og support
8.1 Garantioplysninger
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 Kundesupport
For further assistance, technical support, or inquiries not covered in this manual, please contact A4tech customer service or visit the official A4tech webwebsted for supportressourcer.





