Logitech® Wireless Touch Keyboard K400 Plus

Getting Started

The Logitech K400 Plus is a wireless touch keyboard designed for comfortable control of your PC to TV entertainment. It features a built-in touchpad for navigation and media hotkeys for easy access to common functions.

Features and Hotkeys

The keyboard layout includes a full QWERTY keyboard on the left and a large touchpad on the right. Above the touchpad are dedicated media control buttons.

• Left Mouse Click: Located on the top left of the keyboard, and also performed by pressing the touchpad.
• Mute: Mutes audio output.
• Volume Down: Decreases audio volume.
• Volume Up: Increases audio volume.
• Internet Home: Opens your default web browser to its home page.

The back of the keyboard features a battery compartment for two AA alkaline batteries and a storage slot for the Logitech Unifying nano receiver.

Touchpad Gestures

The integrated touchpad allows for intuitive navigation and control.

Point and Scroll

1. Point and Slide: Move one finger anywhere on the touchpad to control the screen pointer.
2. Scroll: Use two fingers, moving them up or down, to scroll through content.

Left and Right Click

1. Left Click: Press the dedicated left-click button or tap the touchpad surface.
2. Right Click: Press the dedicated right-click button.

To customize your touchpad experience, including pointer speed, scrolling, and tap-to-click functionality, download and install the Logitech Unifying software from www.logitech.com/support/K400.

Logitech® Unifying Receiver

The Logitech Unifying receiver allows you to connect multiple compatible Logitech wireless devices to your computer using a single USB port.

Plug it. Forget it. Add to it.

Your Logitech K400 Plus comes with a Unifying receiver. Look for the orange Unifying logo on other Logitech wireless devices or their packaging to see if they are compatible. You can connect up to six Unifying-ready devices to one receiver, freeing up USB ports.

Getting Started with Unifying

To pair new wireless devices with your existing Unifying receiver:

1. Ensure your Unifying receiver is securely plugged into a USB port on your computer.
2. If you haven't already, download the Logitech Unifying software from www.logitech.com/unifying.
3. Launch the Unifying software (typically found under Start > All Programs > Logitech > Unifying > Logitech Unifying Software) and follow the on-screen instructions to pair your new wireless device.

Help with Setup

If you encounter issues during setup or operation, consider the following troubleshooting steps:

• Power: Ensure the keyboard is powered on. Try toggling the power switch off and then on again.
• Receiver Connection: Verify the Unifying receiver is securely plugged into a computer USB port. Try a different USB port or plug it directly into a computer USB port if currently connected via a USB hub.
• Batteries: Check if the battery tab has been removed. Confirm the correct orientation of the two AA alkaline batteries, or replace them if necessary.
• Interference: Remove any metallic objects positioned between the keyboard and the Unifying receiver.
• Proximity: Move the Unifying receiver to a USB port closer to the keyboard.
• Reconnection: Use the Logitech Unifying software to reconnect the keyboard and Unifying receiver.