1. Producte acabatview
The Logitech Wireless K400R is a slim, compact keyboard designed for comfortable and quiet typing, featuring an integrated 3.5-inch multi-touch touchpad. It offers a reliable wireless connection via the Logitech Unifying Receiver, making it ideal for controlling your laptop, desktop PC, or even a connected TV from a distance.

Figure 1: Logitech K400R Wireless Keyboard, showcasinel seu disseny compacte i el touchpad integrat.
Key features include a 10-meter wireless range, plug-and-play simplicity, and a long 12-month battery life. The multi-touch touchpad supports gestures such as pinch-to-zoom, pan, scroll, and image rotation, enhancing navigation and control.
2. Guia de configuració
2.1. Contingut del paquet
Abans de començar, assegureu-vos que el paquet contingui els elements següents:
- Logitech Wireless K400R Keyboard
- Receptor unificador Logitech
- 2 piles AA (preinstal·lades o incloses)
2.2. Instal·lació de la bateria
The Logitech K400R keyboard is powered by two AA batteries. These are typically pre-installed or included in the packaging.
- Localitzeu la tapa del compartiment de la bateria a la part inferior del teclat.
- Feu lliscar la coberta oberta.
- Introduïu les dues piles AA, assegurant-vos de la polaritat correcta (+ i -).
- Tanqueu bé la tapa del compartiment de la bateria.
2.3. Connexió del receptor unificador
The Logitech K400R uses a Logitech Unifying Receiver for wireless connectivity. This receiver allows you to connect multiple compatible Logitech devices to a single USB port.
- Locate the Logitech Unifying Receiver. It is a small USB dongle.
- Plug the Unifying Receiver into an available USB port on your computer or TV.
- The operating system should automatically detect and install the necessary drivers. This is a plug-and-play process.
- Engegueu el teclat amb l'interruptor d'engegada, que normalment es troba a la vora superior dreta del teclat.
- El teclat ara hauria d'estar connectat i llest per utilitzar.
3. Funcionament del teclat
The Logitech K400R provides a full keyboard layout along with an integrated multi-touch touchpad for seamless navigation.
3.1. Funcions bàsiques del teclat
The keyboard features 79 keys, including standard alphanumeric keys, function keys (F1-F12), and media control keys. Use the keys as you would with any standard keyboard for typing and command input.
3.2. Touchpad Operation
The large 3.5-inch multi-touch touchpad allows for intuitive cursor control and gesture-based navigation.
- Toc amb un sol dit: Funciona com un clic esquerre.
- Toc amb dos dits: Funciona com un clic dret.
- Desplaçament: Drag two fingers up or down on the touchpad to scroll vertically.
- Pessiga per fer zoom: Place two fingers on the touchpad and pinch them together to zoom out, or spread them apart to zoom in.
- pa: Drag two fingers across the touchpad to pan horizontally or vertically within a document or image.
- Girar: Rotate two fingers on the touchpad to rotate images or objects (application dependent).

Figure 2: The Logitech K400R keyboard in use, demonstrating its suitability for controlling media from a comfortable distance.
3.3. Wireless Range and Connectivity
The keyboard offers an ample wireless range of up to 10 meters (approximately 33 feet), providing flexibility to control your device from across the room. The Logitech Unifying Receiver ensures a stable and reliable connection.
The K400R is compatible with various devices, including laptops, desktop PCs, and smart TVs that support USB keyboards and mice. Its plug-and-play design allows for quick switching between compatible devices.
4. Manteniment
4.1. Neteja del teclat
Per mantenir el rendiment i l'aspecte del teclat, es recomana netejar-lo regularment:
- Apagueu el teclat abans de netejar-lo.
- Utilitzeu un drap suau i sense pelusa lleugerament dampamb aigua o una solució de neteja suau.
- Eviteu utilitzar netejadors abrasius, dissolvents o aerosols directament sobre el teclat.
- Per a la pols i les restes entre les tecles, feu servir aire comprimit.
- Gently wipe the touchpad surface to ensure smooth operation.
4.2. Substitució de la bateria
The keyboard boasts a battery life of up to 12 months under typical usage. When the battery indicator light (if present) signals low power, or if the keyboard becomes unresponsive, it's time to replace the batteries.
- Apagueu el teclat.
- Obriu el compartiment de la bateria a la part inferior.
- Traieu les piles AA antigues.
- Introduïu dues piles AA noves, observant la polaritat correcta.
- Tanqueu el compartiment de la bateria.
- Turn the keyboard back on.
5. Solució De Problemes
If you encounter issues with your Logitech K400R keyboard, try the following troubleshooting steps:
- No Response from Keyboard:
- Assegureu-vos que el teclat estigui encès.
- Comproveu els nivells de la bateria i substituïu-la si cal.
- Assegureu-vos que el receptor Unifying estigui ben connectat a un port USB que funcioni. Proveu-ho amb un altre port USB.
- Move the keyboard closer to the Unifying Receiver to rule out range issues.
- If you have other Logitech Unifying devices, ensure the keyboard is paired correctly using the Logitech Unifying Software (available for download from Logitech's official weblloc).
- Touchpad Not Responding or Erratic:
- Ensure the touchpad surface is clean and free of debris.
- Restart your computer or TV.
- Check for any software conflicts or driver issues on your operating system.
- Problemes d'interferència:
- Other wireless devices (e.g., Wi-Fi routers, cordless phones) can cause interference. Try to minimize their proximity to the keyboard and receiver.
Per obtenir més ajuda, consulteu el suport de Logitech weblloc o poseu-vos en contacte amb el seu servei d'atenció al client.
6. Especificacions
| Característica | Detall |
|---|---|
| Marca | Logitech |
| Número de model | FBA_920-003109 (K400R) |
| Tecnologia de connectivitat | Wireless (Logitech Unifying Receiver) |
| abast sense fils | 10 metres (33 peus) |
| Descripció del teclat | Wireless, Slim |
| Nombre de claus | 79 |
| Touchpad Size | 3.5 inches (integrated multi-touch) |
| Font d'alimentació | 2 x piles AA |
| Durada estimada de la bateria | 12 mesos |
| Dispositius compatibles | Laptop, Desktop PC, Smart TV |
| Color | Negre |
| Dimensions del producte (LxWxH) | 8.27 x 2.24 x 7.09 polzades |
| Pes de l'article | 1 lliures |
| Fabricant | Logitech |
| Data de primera disponibilitat | 8 de desembre de 2012 |
7. Garantia i Suport
Logitech products are manufactured to high quality standards and are backed by a limited hardware warranty. For specific warranty terms and conditions applicable to your Logitech K400R keyboard, please refer to the warranty information provided with your purchase or visit the official Logitech support weblloc.
For technical support, driver downloads, FAQs, and additional resources, please visit the official Logitech support weblloc:
When contacting support, please have your product model number (K400R or FBA_920-003109) and purchase information ready.





