Logitech Touch Keyboard K400 User Manual

Introduction

This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your Logitech Touch Keyboard K400. Designed for seamless control of your computer or smart TV from a distance, this wireless keyboard features an integrated touchpad for navigation.

Product Overview

The Logitech Touch Keyboard K400 combines a full-size keyboard with a multi-touch touchpad, offering a compact solution for controlling your media center PC or other compatible devices. Its wireless connectivity provides freedom of movement.

Image 1: Angled view of the Logitech Touch Keyboard K400, showcasing the keyboard layout and integrated touchpad on the right side. The keyboard is black with white key legends.

Image 2: Top-down view of the Logitech Touch Keyboard K400, providing a clear perspective of all keys and the touchpad. This image highlights the standard keyboard layout and media control keys.

Setup Instructions

1. Unpack the Keyboard: Carefully remove the keyboard and the USB Unifying receiver from its packaging.
2. Install Batteries:
   • Locate the battery compartment on the underside of the keyboard.
   • Open the compartment cover.
   • Insert two AA batteries, ensuring correct polarity (+/-). (Two AA batteries are required and typically included).
   • Close the battery compartment cover.
3. Connect the USB Receiver:
   • Plug the small USB Unifying receiver into an available USB port on your computer, smart TV, or other compatible device.
   • For desktop computers where the USB port might be far or obstructed, use the provided USB extender cable if available, to position the receiver for optimal signal.
4. Power On: Turn on the keyboard using the power switch, usually located on the top edge or side of the keyboard. The keyboard should automatically connect to the receiver.
5. Test Functionality: Verify that the keyboard and touchpad are responsive. If not, refer to the Troubleshooting section.

Image 3: Angled view of the Logitech K400, potentially showing the underside or a side profile where the battery compartment or power switch might be located for setup.

Operating Instructions

Keyboard Functions

• Typing: Use the standard QWERTY (or AZERTY, depending on region) layout for text input.
• Function Keys (F1-F12): These keys often have secondary functions (media controls, volume, home, search, etc.) accessible by pressing the Fn key simultaneously, or directly if configured as primary.
• Media Control Keys: Dedicated keys for volume up/down/mute, play/pause, previous/next track are typically located above the function keys.
• Special Keys: Keys like Home, End, Page Up, Page Down are integrated into the layout for navigation.

Touchpad Functions

The integrated touchpad allows for precise cursor control and supports multi-touch gestures.

• Single Finger Tap: Functions as a left-click.
• Two Finger Tap: Functions as a right-click.
• Two Finger Scroll: Drag two fingers up or down to scroll vertically. Drag two fingers left or right to scroll horizontally.
• Pinch Zoom: Pinch in or out with two fingers to zoom in or out (application dependent).
• Left-Click Button: A dedicated left-click button is located on the top-left corner of the keyboard for convenient one-handed operation.
• Right-Click Buttons: Dedicated right-click buttons are typically located below the touchpad.

Image 4: A lifestyle image showing two individuals comfortably using the Logitech K400 keyboard to interact with a large screen, demonstrating its use in a home entertainment setup.

Maintenance

• Cleaning:
  • Turn off the keyboard before cleaning.
  • Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution.
  • Avoid excessive moisture and do not spray cleaners directly onto the keyboard.
  • Do not use abrasive cleaners, solvents, or aerosol sprays.
• Battery Replacement:
  • When the battery indicator light (if present) signals low power, or if performance degrades, replace the two AA batteries.
  • Follow the battery installation steps outlined in the Setup section.
  • Dispose of old batteries responsibly according to local regulations.
• Storage: Store the keyboard in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the batteries to prevent leakage.

Troubleshooting

Specifications

• Brand: Logitech
• Model Number: 920-003110 (K400)
• Connectivity Technology: RF Wireless (2.4 GHz)
• Wireless Range: Up to 10 meters (33 feet) (Actual wireless range may vary with use, settings and environmental conditions.)
• Pointing Device: Integrated Touchpad
• Keyboard Layout: Standard (Layout may vary by region, e.g., QWERTY, AZERTY)
• Compatible Devices: Laptop, PC, Smart TV
• Operating System Compatibility: Windows, Windows 7, Windows Vista, Windows XP (and generally compatible with modern OS like Windows 10/11, macOS, Linux for basic functions)
• Power Source: Battery Powered
• Batteries: 2 AA batteries (included)
• Battery Life: Up to 18 months (Battery life may vary based on user and computing conditions.)
• Item Weight: Approximately 1.19 pounds (0.54 kg)
• Product Dimensions (LxWxH): Approximately 16 x 6 x 1.25 inches (40.64 x 15.24 x 3.18 cm)
• Color: Black
• Material: Silicone Plastic
• What's in the Box: Wireless Touch Keyboard K400, USB Unifying receiver, 2 AA batteries, User documentation.

Warranty and Support

For detailed warranty information and technical support, please refer to the official Logitech website or contact Logitech customer service. Product registration may be required to activate your warranty.

• Online Support: Visit Logitech Support for FAQs, drivers, and troubleshooting guides.
• Product Registration: Register your product at Logitech Product Registration.