April 19, 2025

How to Set Up and Connect the Logitech K400 Plus to Various Devices

Post By pushkar all

Introduction

The Logitech Wireless Touch Keyboard K400 Plus is a compact, all-in-one wireless keyboard designed for effortless typing and media control from your couch. Its integrated touchpad and long wireless range make it ideal for smart TVs, PCs, laptops, and even some mobile devices. However, many users face challenges during the initial setup process, especially when connecting it to multiple types of devices.Whether you’re trying to pair the Logitech K400 Plus with a laptop, smart TV, or another device, this comprehensive guide will walk you through every step. We’ll also address compatibility concerns, software tips, and troubleshooting scenarios. Our goal is to help you achieve a seamless Logitech K400 Plus setup experience across all platforms.

Logitech K400 Plus Overview

Key Features at a Glance

  • Wireless range up to 10 meters (33 feet)

  • Built-in multi-touch trackpad

  • Plug-and-play USB receiver (Logitech Unifying Receiver)

  • Compatible with Windows, Android, and select Smart TVs

  • Media control hotkeys for easy navigation

What’s in the Box?

When you purchase the Logitech Wireless Touch Keyboard K400 Plus, you should find the following components:

  • Logitech K400 Plus keyboard

  • Logitech Unifying USB Receiver

  • 2x AA batteries (pre-installed)

  • User documentation

Ensure all components are present before proceeding with the setup.

How to Set Up the Logitech K400 Plus

Step 1: Insert or Check Batteries

  • Open the battery compartment at the back of the keyboard.

  • Make sure the AA batteries are properly inserted.

  • The keyboard comes preloaded with batteries, but replacing them before setup can ensure optimal performance.

Step 2: Locate the USB Receiver

  • Find the small USB dongle (Unifying Receiver) located inside the battery compartment.

  • Remove it and insert it into an available USB port on the target device.

Step 3: Turn On the Keyboard

  • Slide the power switch (located at the top edge of the keyboard) to the ON position.

  • A green LED should briefly appear indicating the keyboard is powered.

Connecting the Logitech K400 Plus to Different Devices

1. Pair Logitech K400 Plus with Laptop or Desktop (Windows)

Plug-and-Play Setup (Windows 10/11)

  • Insert the Unifying Receiver into the USB port.

  • Windows will automatically detect the device and install drivers.

  • Test the keyboard and touchpad functions.

Using Logitech Options Software (Optional)

  • Download and install Logitech Options from the official Logitech website.

  • Allows for customization of gestures, function keys, and media shortcuts.

  • Ideal for power users who want to fine-tune their experience.

Troubleshooting Tips:

  • If the keyboard isn’t detected, try switching USB ports.

  • Ensure no physical obstructions between the keyboard and receiver.

2. Connect the Logitech K400 Plus to Smart TV (Android TV, LG, Samsung, etc.)

General Steps:

  • Insert the Unifying Receiver into one of the TV’s available USB ports.

  • Wait a few seconds; most TVs will automatically recognize the keyboard.

  • Use the touchpad to navigate the UI and type into apps or browser fields.

Supported Smart TV Brands:

  • Android TV: Fully compatible

  • LG Smart TVs (WebOS): Basic typing and navigation support

  • Samsung Smart TVs (Tizen): Varies by model, limited in some apps

Important Notes:

  • Smart TVs don’t support software customizations.

  • Touchpad gestures may be limited depending on the TV’s operating system.

3. Use the K400 Plus with Android Devices (Phone or Tablet)

Via USB OTG Cable

  • Connect a USB OTG (On-The-Go) adapter to your Android device.

  • Plug the Unifying Receiver into the OTG adapter.

  • Your device should instantly detect the keyboard.

Limitations:

  • No gesture support beyond basic scrolling and clicking.

  • Works best for tasks like typing documents or browsing the web.

4. Pair with Raspberry Pi or Other Linux Devices

  • Insert the receiver into a USB port on the Raspberry Pi.

  • The system should automatically detect and install the required drivers.

  • Useful for developers or users setting up media centers with Kodi or Raspbian.

Using Logitech Unifying Software

What Is Logitech Unifying Software?

  • A desktop utility to manage multiple devices using one USB receiver.

  • Lets you pair up to 6 Logitech devices simultaneously.

How to Download and Use:

  1. Visit Logitech’s official website and download the Logitech Unifying Software.

  2. Launch the app and follow the instructions to pair your K400 Plus or any other compatible device.

  3. You can also check firmware updates or reset connections if needed.

Customizing the K400 Plus with Logitech Options

Key Customization Features

  • Remap function keys (F1-F12)

  • Enable/disable touchpad tap-to-click

  • Customize gesture sensitivity

  • Adjust scrolling behavior

How to Install:

  • Compatible with Windows and macOS.

  • Download from the Logitech Options download page.

Troubleshooting Common Issues

Keyboard Not Responding

  • Ensure batteries are charged and properly inserted.

  • Try reconnecting the USB receiver to a different port.

  • Restart the device and reattempt the connection.

Touchpad Lag or Unresponsiveness

  • Clean the touchpad surface with a microfiber cloth.

  • Check for software conflicts (especially on Windows).

Device Not Recognizing Keyboard

  • Confirm USB receiver is fully inserted.

  • Check compatibility with the specific smart TV or mobile device.

  • Update device firmware or drivers if needed.

Maintenance and Battery Management

Battery Life

  • The K400 Plus provides up to 18 months of battery life with regular use.

  • Use alkaline batteries for best performance.

Power Saving Tips

  • Turn off the keyboard when not in use.

  • Use the keyboard within the optimal wireless range.

Best Practices for Using Logitech K400 Plus

  • Use a clean, flat surface to ensure accurate touchpad tracking.

  • Avoid using near large metal objects or wireless routers to reduce signal interference.

  • Regularly update software and firmware for best performance.

Conclusion

The Logitech Wireless Touch Keyboard K400 Plus is a versatile, reliable input device ideal for a range of applications—from media center navigation to mobile typing. Whether you’re setting it up on a Windows laptop, Android TV, or Raspberry Pi, the steps are straightforward and user-friendly. With its plug-and-play nature, integrated touchpad, and long battery life, the K400 Plus delivers both convenience and performance.

For users asking how to execute a Logitech K400 Plus setup, or how to pair the Logitech K400 Plus with a laptop, this guide should provide complete clarity and confidence to get started.

Frequently Asked Questions (FAQ)

1. Can I use the Logitech K400 Plus without the USB receiver?

No, the K400 Plus requires the included Logitech Unifying Receiver to function. It does not support native Bluetooth connectivity.

2. How do I pair Logitech K400 Plus with a laptop?

Simply plug in the Unifying Receiver into a USB port on your laptop. The keyboard will automatically pair and be ready to use.

3. Does the Logitech K400 Plus work with Smart TVs?

Yes, it works with most Smart TVs that support USB HID devices. Full functionality may vary depending on the brand and operating system.

4. Can I customize the keys or gestures on the K400 Plus?

Yes, with Logitech Options software (Windows/macOS), you can remap keys and adjust touchpad gestures.

5. Is Logitech K400 Plus compatible with Mac?

Basic functionality works on macOS, but some function keys and gestures may not be fully supported.