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K400

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Wireless control of your laptop.
This stylish keyboard with comfortable, low-profile keys provides long range, reliable wireless —perfect for the living room.
With a 10-meter wireless range*, built-in multi-touch touchpad and plug-and-play setup, this keyboard delivers lean-back wireless control for your laptop—even when you’re connecting it to your TV.


10-meter (33 feet) wireless range*

You can turn up the volume of a YouTube™ video, pause your vacation slideshow or tweet about the movie you just downloaded—all without getting up from the couch.

Large 3.5-inch, built-in touchpad

A large 3.5-inch, built-in touchpad makes vertical scrolling intuitive. And multi-touch navigation makes it easier than ever to point and scroll your way through the Web.

Plug-and-play simplicity

Setup couldn’t be easier—you simply plug the tiny wireless receiver into a USB port and enjoy. Even the hot keys work right out of the box without software.

Logitech Unifying receiver

The tiny receiver stays in your laptop. Plus, you can easily add a compatible wireless mouse, keyboard or number pad—without the hassle of multiple USB receivers.

Learn more about the Unifying receiver.

Comfortable, quiet typing

Whether you’re surfing the Web or e-mailing a friend, typing is just plain easy with sleek, low-profile keys that feel good and barely make a sound.

Typing can be tiring. Find out how Logitech helps you get comfortable. Learn more.

12-month battery life

You can go a full year doing the things you love without battery hassles.** An on/off switch helps you save power when you’re not using the keyboard.

Big on battery life? We are, too. Learn more.

Advanced 2.4 GHz wireless

So you can work or play in more places—like your comfy couch—the long-range wireless connection virtually eliminates delays, dropouts and interference.

Learn more about Logitech wireless technologies.

128-bit AES encryption

It helps protect your information by encrypting data transfer between the keyboard and receiver with one of the highest levels of data encryption available.

Easy-to-read keys

The bold, bright white characters make the keys easier to read in your living room.

Sleek and compact design

It saves space without compromising on comfort—and looks good, too, thanks to the clean lines and a touch of color and pattern on the touchpad.

Media hot keys

Mute, volume up, volume down and a Home button help you do the things you do most—instantly.

Vertical storage

The keyboard stands vertically for easy storage when living room space is limited.
System Requirements

Windows® XP, Windows Vista® or Windows® 7
USB port


Warranty Information

3-year limited hardware warranty


Part Number

PN 920-003070

Technical Specifications

2.4 GHz wireless connectivity with Logitech Unifying technology



Wireless Touch Keyboard
USB range extender
Unifying receiver
User documentation
2 AA batteries (pre-installed)