About K400 Plus
The Wireless Touch Keyboard K400 Plus features a full-size keyboard layout and a touchpad in a compact design. Incurve keys are ideal for touch typists, and the soft key stroke ensures a quiet typing experience. The full-size touchpad offers familiar scroll and navigation gestures. Left and right-click buttons are located below the touchpad, and volume control buttons are positioned above, providing convenient control at your fingertips.
For two-hand control, particularly for users who prefer using their thumbs for navigation, a left mouse-click button is situated on the upper left side of the keyboard. This allows for navigation with your right hand and selection with your left.
Keyboard Layout Overview
The keyboard includes the following key areas:
- 1. Left mouse-click button: For left-clicking actions.
- 2. Shortcut and function keys: A row of keys providing access to various functions.
- 3. Volume control: Buttons for adjusting audio volume.
- 4. Touchpad: Integrated touchpad for cursor control and gestures.
- 5. Left and right mouse-click buttons: Dedicated buttons for mouse clicks, located below the touchpad.
Connect
Step 1: Insert the Unifying receiver into a USB port on your computer.
Step 2: Pull to remove the yellow battery tab.
Note: Ensure the keyboard's ON/OFF switch, located at the top, is in the ON position. Your keyboard is now ready to use.
Shortcut Keys
Shortcut and function keys streamline navigation, media control, and keyboard functions.
| Key | Shortcut/Function |
|---|---|
| F1 | Back |
| F2 | Home |
| F3 | Switch application |
| F4 | Menu |
| F5 | Search |
| F6 | Show/hide desktop |
| F7 | Maximize window |
| F8 | Switch screen |
| F9 | Media |
| F10 | Previous track |
| F11 | Play/Pause |
| F12 | Next track |
| Mute button | Mute |
| Volume down button | Volume down |
| Volume up button | Volume up |
| Fn + Ins | PC sleep |
| Fn + Backspace | Print screen |
| Fn + Caps Lock | Scroll lock |
| Fn + Left arrow | Home |
| Fn + Right arrow | End |
| Fn + Up arrow | Page up |
| Fn + Down arrow | Page down |
To activate F1-F12 keys, press Fn + the desired F key.
Touch Tap and Scrolling
Touch Tap: Press the Fn key and the left mouse button to toggle touch tap disable and enabled. You can also press the left mouse click button at the top-left of the keyboard for a click or comfortable two-handed navigation. Tapping the touchpad surface also performs a click.
Scrolling: Scroll with two fingers, up or down. You can also press the Fn key and slide one finger anywhere on the touchpad simultaneously for comfortable two-handed scrolling.
Receiver Storage
When not in use, store the Receiver in the battery compartment to prevent loss.
Logitech Options
The K400 Plus is a plug-and-play keyboard with many features available out of the box. For enhanced customization and features, Logitech Options software is recommended. Download and install Options software to:
- Modify cursor speed and adjust scrolling.
- Review tutorial videos on gestures.
- Create custom shortcut keys.
- Disable and enable keys such as Caps Lock, Insert, and Windows Start.
- Receive Caps Lock notices and low-battery warnings.
Numerous other features are also available.
Support
Compatible Computers
The K400 Plus keyboard is compatible with both desktop and laptop computers and supports the following operating systems:
- Windows® 7 and later
- Chrome OS™
- Android™ 5.0.2 and later
Keyboard functionality, including Hot Keys and Touchpad Gestures, may vary depending on the operating system. System settings can confirm device compatibility with the K400 Plus.
