1. Introducció
This manual provides instructions for the Logitech Wireless Touch K400r Compact Keyboard with Touchpad. This device is designed to provide convenient wireless control for your computer, featuring an integrated multitouch touchpad for navigation. It offers a plug-and-play experience for immediate use.

Imatge 1.1: Part superior view of the Logitech K400r Wireless Touch Keyboard, showcasing the full keyboard layout and the integrated touchpad on the right side.
2. Configuració
2.1 Què hi ha a la caixa
Verifiqueu que tots els components siguin presents:
- Logitech Wireless Touch K400r Keyboard
- Logitech Unifying USB Receiver
- USB Extender (optional, for improved signal range)
- 2 piles AA (preinstal·lades o incloses)

Image 2.1: The Logitech K400r keyboard shown alongside its compact USB receiver and an optional USB extender cable.
2.2 Battery Installation and USB Receiver Retrieval
The keyboard requires two AA batteries for operation. The USB receiver is typically stored within the battery compartment for convenience during transport.
- Localitzeu la tapa del compartiment de la bateria a la part inferior del teclat.
- Feu lliscar la coberta oberta.
- If the USB receiver is stored inside, carefully remove it.
- Introduïu les dues piles AA, assegurant-vos de la polaritat correcta (+/-).
- Tanqueu bé la tapa del compartiment de la bateria.

Image 2.2: The bottom of the Logitech K400r keyboard, highlighting the battery compartment and the dedicated slot for storing the USB receiver.
2.3 Connexió del receptor USB
To establish a wireless connection between the keyboard and your computer:
- Plug the Logitech Unifying USB receiver into an available USB port on your computer.
- For optimal signal, especially if the computer is far or obstructed, use the provided USB extender cable.
- Turn on the keyboard using the power switch, usually located on the top right edge of the keyboard.
- L'ordinador hauria de detectar i instal·lar automàticament els controladors necessaris. Aquest procés pot trigar uns instants.
Nota:
- For some systems, particularly older Windows XP installations, you may need to visit the Logitech support website to download and install the Logitech Unifying Software for full functionality or if the keyboard does not connect automatically.
- Ensure the keyboard is within range of the USB receiver (typically up to 10 meters or 33 feet).
3. Instruccions de funcionament
3.1 Funcions del teclat
The K400r features a standard QWERTY keyboard layout with additional function keys and media controls.
- Claus estàndard: Type as you would on any conventional keyboard.
- Tecles de funció (F1-F12): These keys may have secondary functions (e.g., media control, volume, home) accessible by pressing the Fn tecla simultàniament. Consulteu les llegendes de les tecles per a les funcions específiques.
- Controls de mitjans: Dedicated keys for volume up, volume down, mute, and play/pause are located above the function keys.
3.2 Ús del touchpad
The integrated 3.5-inch multitouch touchpad allows for intuitive navigation without a separate mouse.
- Toc amb un sol dit: Funciona com un clic esquerre.
- Toc amb dos dits: Funciona com un clic dret.
- Arrossegament amb un sol dit: Mou el cursor.
- Desplaçament amb dos dits: Drag two fingers up or down to scroll vertically. Drag two fingers left or right to scroll horizontally.
- Zoom amb pinça: Pinch two fingers together or spread them apart to zoom in or out (application dependent).
- Three Finger Swipe Up: Shows all open windows (Windows 7/8).
- Three Finger Swipe Down: Shows the desktop (Windows 7/8).
Nota:
- Touchpad gestures may vary slightly depending on your operating system and installed drivers.
- For advanced customization of touchpad settings, refer to your operating system's mouse or touchpad settings.
4. Manteniment
4.1 Cleaning the Keyboard and Touchpad
Per mantenir un rendiment i un aspecte òptims:
- Utilitzeu un drap suau i sense pelusa lleugerament dampamb aigua o una solució de neteja suau.
- Avoid harsh chemicals, abrasive cleaners, or solvents.
- Do not immerse the keyboard in liquid.
- Per a la pols i les restes entre les tecles, feu servir aire comprimit.
4.2 Substitució de la bateria
When the keyboard's performance degrades or the battery indicator light (if present) signals low power, replace the batteries:
- Turn off the keyboard using the power switch.
- Obriu el compartiment de la bateria a la part inferior.
- Traieu les piles AA antigues.
- Insert two new AA batteries, observing correct polarity.
- Close the compartment and turn the keyboard back on.
Important:
- Eliminar les bateries usades d'acord amb la normativa local.
5. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| El teclat no respon |
|
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| Cursor erratic or unresponsive |
|
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| Tecles específiques que no funcionen |
|
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If these steps do not resolve the issue, please refer to the Support section for further assistance.
6. Especificacions
| Marca | Logitech |
| Model | K400r (920-003070) |
| Tecnologia de connectivitat | Wireless (2.4 GHz via USB Unifying Receiver) |
| Compatibilitat de sistemes operatius | Windows 8, Windows XP (and generally compatible with newer Windows versions) |
| Plataforma de maquinari | Ordinador portàtil, ordinador de sobretaula |
| Font d'alimentació | 2 piles AA |
| Pes de l'article | Aproximadament 1 lliura (0.45 kg) |
| Color | Negre |
| Material | Plàstic |
| Dimensions (L x A x A) | Aproximadament 16.54 x 8.58 x 3.31 polzades (42 x 21.8 x 8.4 cm) |
7. Informació de la garantia
Logitech products typically come with a limited hardware warranty. The specific duration and terms of the warranty may vary based on region and product type. For detailed warranty information, including coverage and limitations, please refer to the official Logitech weblloc web o la targeta de garantia inclosa amb el producte.
Conserveu el vostre comprovant de compra per a reclamacions de garantia.
8. Atenció al client
For technical assistance, driver downloads, FAQs, or to contact customer service, please visit the official Logitech support weblloc:
When contacting support, please have your product model (K400r) and serial number available.





