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Logitech K400 vs K400 Plus (2021): Comparing Wireless Keyboards With A Touchpad

Logitech understands the benefit of a PC-connected-TV. Aside from serving as a second monitor, the larger screen size of a television makes working, learning, and playing so much for enjoyable. But operating it can be cumbersome, especially if you’re going to rely on your laptop—or daresay—even just a remote.

Wireless keyboards like the Logitech K400 and K400 Plus aim to make life easier. These models come with a built-in touchpad to make navigation a little more effortless. And so given the “plus” label, how much more do you actually get from the K400 Plus over its predecessor? Below, we take a look at Logitech’s best-selling wireless keyboards to see which is better at controlling your PC-to-TV setup.

Logitech K400 vs K400 Plus Comparison Chart

ModelLogitech K400Logitech K400 Plus
 Amazon product
PriceCheck Price on AmazonCheck Price on Amazon
Dimensions5.35 x 13.90 x 0.94 inches5.50 x 13.95 x 0.93 inches
Weight0.79 lbs0.86 lbs
OS SupportWindows XP, Windows 7, Windows Vista or Windows 8 / Windows 8 RTWindows 7, Windows 8, Windows 10 or later, Android 5.0 or later Chrome OS
Spill ResistantYesYes
Keyboard BacklightNoNo
Wireless Range10m10m
Battery Life12 months18 months
Warranty3-Year Limited Warranty1-Year Limited Warranty
ColorsBlackBlack, White


The Logitech K400 and K400 Plus are thin, lightweight, and sleek wireless keyboards which feature a large built-in touchpad.

Both the Logitech K400 and K400 Plus scissor switch keyboards, large left and right click keys, and a touchpad with gesture support.

The Logitech K400 and K400 Plus are undoubtedly made from the same design DNA. Both keyboards come in a slim and compact profile, with rounded corners that lend the devices a sleeker and more contemporary aesthetic. At less than an inch thick, the K400 and K400 Plus certainly allows for easy storage.

However, the Plus model does look a lot more attractive compared to its predecessor. The black housing—which appears more like grey next to the K400’s black—feels a little more durable, even if it’s made of plastic. Yellow accents on the touchpad, and on the top left corner button, pulls together the keyboard’s design elements. It’s a professional-looking device that will suit casual environments as well.

Likewise, the original K400’s lightweight profile doesn’t seem to take away from the sturdiness of the keyboard. It’s smaller than its successor, with more compact keys. Moreover, the touchpad features some graphic line detail. But the overall layout still feels great to use. Indeed, Logitech has managed to find a nice balance of comfort and functionality with these two wireless keyboards.


Although both keyboards sport compact and low-profile keys, the Logitech K400 Plus has the more intuitive layout.

A closer inspection reveals the graphic line details on the Logitech K400’s touchpad (left), and yellow accent details on the K400 Plus (right)

When it comes to convenience and typing performance, it’s important to remember that the Logitech K400 and K400 Plus are not full-size keyboards. And with the inclusion of a large, built-in touchpad with gesture support, this translates to less space for the actual keys. Logitech has tried to address possible issues by including a number of speciality keys in the layout of the devices.


For instance, there’s a dedicated Windows start key on the K400 and K400 Plus so you can access your start screen easily. On both keyboards, you also get the App Switching FN so you can switch across open apps conveniently. In addition, there’s an extra left-click button on the top-left corner of the devices, which should make dragging easier. And if you mostly work on one hand, then you’ll appreciate the large left and right-click keys below the touchpad.

Of course, the top row features the standard F1 to F12 keys which serve either as function or shortcut keys. Just keep in mind that some older models of the K400 may not have icons indicating the double-duty role of these keys.

The K400 and K400 Plus also include media hot keys like mute, play, and volume controls. On the original model, the hot keys are placed on the top left corner. In contrast, the K400 Plus has relocated these buttons to just above the touchpad. It’s a change that makes using the Plus version a little more intuitive, considering how easier it is to reach for the hot keys instinctively from the touchpad.

Overall Performance

Overall, the keys on the K400 and K400 Plus are both low-profile and generally quiet to type on. However, the keyboard’s low angle does mean it works better on the lap rather than on the desk. This isn’t a surprise, as Logitech seems keen to offer these wireless keyboards as a means of operating a PC-connected-TV from the comforts of your own couch.

Connectivity and Compatibility

The Logitech K400 and K400 Plus boast a 10 ft. wireless range. The latter, however, is compatible with more platforms, including Android and Chrome OS.

The Logitech K400 (left) and the K400 Plus (right) both work great on the lap.

When it comes to connections, the Logitech K400 and K400 Plus both ditch Bluetooth connectivity, and instead rely on a 2.4GHz Logitech Unifying receiver. This gives the wireless touch keyboards a fairly reliable 10 ft (33m) wireless range, enough for you to work anywhere in your living room.

But the K400 Plus does boast a wider compatibility to a number of OS. Whereas the original K400 has been especially designed for Windows 8, with support for Windows 7, XP, and Vista, the K400 Plus is compatible with Windows 7, 8, 10 and later, as well as Chrome OS and Android 5.0 and later. In fact, Android users get shortcut keys on the Plus model, too.

Battery Life and Warranty

The Logitech K400 Plus has the longer battery life while the Logitech K400 offers a lengthier warranty period.

The Logitech K400 Plus has a low-angle design, which works better handheld or on the lap, instead of the desk.

These Logitech wireless keyboards run on two AA batteries pre-installed. With the K400 Plus, you’ll see about 18 months of battery life based on two hours of typing per day. On the other hand, the original model should give you about a year of performance before running out of juice.

Although both devices come with limited warranty, the original K400 is good for three years whereas the Plus is only valid for a year. In general, valid warranty claims are processed within 30 days after purchase through the point-of-purchase retailer. This policy applies to both Logitech devices.


The Logitech K400 Plus lives up to its “plus” label, offering a larger keyboard with a more intuitive layout, as well as extensive OS and platform support.

Logitech K400

Best for those on a budget

Logitech K400 Plus

Best for a comfortable typing experience

The Logitech K400 and K400 Plus are affordable wireless keyboards that offer added functionality through a built-in touchpad. Given their features, these devices certainly make navigating your PC-connected-TVs less cumbersome.

However, the Logitech K400 Plus is easier to recommend to most consumers. While it’s not a radical departure from its predecessor, the Plus builds on the key features of the original K400 and refines it. As a result, you get a slightly larger keyboard that’s more comfortable and intuitive, and which is compatible with more operating systems and platforms.

But it’s still good to be reminded these are not full-sized keyboards. And so while brief bouts of typing may be great on both the K400 and K400 Plus, longer hours of writing will not be as comfortable.

In addition, the keys aren’t backlit, so if you’re looking for a keyboard that works great under low-light conditions, you might want to consider the Logitech K830 Illuminated instead. But if you just a need an upgrade over your regular TV remote, or want a reliable, external device to operate your PC-connected-TV, then the K400 Plus does the job well.


📌 What is the difference between the Logitech K400 from the K400 Plus?

The Logitech K400 Plus is slightly larger than the Logitech K400, and comes with a longer 18-month battery life. In addition, the K400 Plus offers a wider OS and platform compatibility, which includes Android 5.0 and Chrome OS.

📌 What is the yellow button on the Logitech K400 Plus?

The yellow button on the Logitech K400 is an extra left-click key for those who prefer two-hand controls.

📌 How can I extend the battery life on my Logitech K400 Plus?

While Logitech claims the K400 Plus comes with an 18-month battery life on two hours of typing every day, you can extend this by switching off the keyboard instead of waiting for it to automatically shut down.

📌 Does Logitech offer a wireless keyboard with backlit keys?

Logitech offers the K830 Illuminated for those in need of a wireless keyboard with backlit keys. Just like the Logitech K400 and K400 Plus, the K830 Illuminated features a built-in touchpad.

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Mari Bassig

Senior Editor, writer and researcher passionate about gadgets, social media, and music.