Logitech K400 Plus Wireless Touch TV Keyboard with Easy Media Control and Built-in Touchpad, HTPC Keyboard for PC-Connected TV, Windows, Android,…

Logitech K400 Plus Wireless Keyboard is one of the best wireless keyboards in its class. I’ve been using it for the past couple of weeks and it’s been an amazing experience. So, as usual, let me start with the pros and cons of the product

Pros –
==> Plug and Play.
==> It’s wireless so you can keep your laptop at one end and operate it from another corner. (You gonna get lazier than you already are)
==> Unifying the keyboard and touchpad make it more convenient than having a combo of wireless keyboard and mouse.
==> Keystrokes are not very noisy
==> Gesture are really very convenient and better than my laptop touchpad(they have used/copied some of the Mac’s features in the keyboard)
==> Compact and slim design gives it a premium feel
==> Light weight make it easier to carry around
==> Ability to change the function keys. You can use it as the standard F1-F12 keys or change it. Though you will have to install Logitech options from […] it will also help you tweak the setting like:
– Keyboard
– Point and Scroll
– Gestures
==> Placement of the Volume keys
==> If you own multiple Logitech wireless Bluetooth devices, you can easily connect it to the Universal receiver that comes with the keyboard

Cons –
==> Using the keyboard at night without lights is a big issue
==> Keys like Num Lock, Print Screen are missing

Initially, it may take some time getting used to it but once you do surely it would be an amazing feeling to use it. Truth be told I was very skeptical about buying a Logitech product which carries a price tag of 2K+, but it was worth the try.

Note: Till now I’ve used the product only on Laptop and Desktop so I’m not quite aware of its performance on other devices. Also, it’s been only a couple of weeks to talk about the battery life so I skipped that part. Once I do I’ll update the review.

This review is for the Logitech K400 Wireless Touch TV Keyboard.
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Update, July 20, 2023
This wireless keyboard still functions like new, but there is one additional quirk discovered since the original review below. Quite often when using the volume controls on the keyboard to raise or lower volume, those two buttons will instead turn off sound entirely. It’s a mild nuisance, and only requires pressing the adjacent volume on/off button. Still love this keyboard and use it nearly every day!
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October 12, 2021
Wireless keyboards have been around for many years with many brands now available. As far as function, they’re all pretty much the same. I’ve used a few of them over the years and have been happy with this particular device so far.

This Logitech K400 Wireless Touch TV Keyboard performs just as you’d expect, with a full-sized standard keyboard layout and a built-in touchpad on the far right. It’s perfect for controlling my old laptop that is now connected to my TV. The farthest away I’ve used it is about 15 feet from the laptop and it has worked flawlessly at that distance. The keys have a nice feel when depressed, providing adequate soft feedback when fully depressed, without clicking. The touchpad is adequate but does have some quirks as described below.

The transmitter operates in the 2.4 GHz band, so theoretically could interfere with your wireless network and other wireless devices, although I’ve used this keyboard extensively and haven’t noticed any issues.

The Function keys are claimed to be customizable to create shortcuts. I don’t have a use for that capability, so haven’t tried it and can’t comment on how it’s implemented. I’ve only used this wireless keyboard on Windows 10 computers, but the specs say it works on ‘Windows 7, 8, 10 or later, Android 5.0 or later, Chrome OS’.

The Volume buttons immediately above the touchpad come in very handy. Be aware though, they control system volume and not the volume of individual applications. To control the volume of a single application, use the on-screen controls for that application.

The keyboard is a good weight to operate while holding in my hands and seems plenty sturdy for daily use, but not for unnecessary roughhousing – as you might expect. It operates on 2 AA batteries which last a long, long time, taking several months of daily use to deplete. (And that’s without turning the power switch off.)

USABILITY NOTES:
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SIGNAL STRENGTH –
The signal seems to be very strong, but the keyboard must have a line-of-sight, unobstructed view of the receiver. For instance, when using the keyboard in my lap the signal doesn’t reach the receiver if my legs are crossed or my knees elevated so the front of the keyboard can’t quite ‘see’ the receiver. Similarly, I’ve found that if the keyboard front is facing 90 degrees away from the receiver, the signal is not received. Not big issues, but they may be important to some people.

TOUCHPAD QUIRKS –
1. As stated above, the touchpad does have some quirks. On two occasions the touchpad all of a sudden started to ONLY control screen magnification – increasing and decreasing as I dragged one finger across the surface. I’ve never determined the cause but in one instance, only removing the battery remedied the strange behavior.

2. The touchpad seems to be particularly sensitive to moisture or oil from the skin on my fingers. Meaning, it sometimes simply stops working properly until I thoroughly wipe my fingers with a dry cloth. This is a common issue when using touchpads, but this one is more sensitive than any others I have used, or currently use.

MYSTERIOUS YELLOW BUTTON –
1. The yellow button at the upper left of the keyboard is poorly documented and I’ve seen many posts asking what the heck it does. After more research than expected I found it simply functions as a left mouse button, and I’ve found it most useful when holding the keyboard in my hands. That way, fingers on the right hand work the touchpad and the left thumb presses the yellow button to select things. After about 5 minutes of practice it seems natural.

2. Some Windows OS menus and windows won’t respond to the yellow button. There doesn’t seem to be any predictable pattern as to which items will or will-not respond to the yellow button – but when that happens, the left button under the touchpad must be used.

FOUR WAYS TO SCROLL A WINDOW –
There are four ways to scroll a window; Pick the one that seems most natural to you.
1. Press and hold the Function [FN] button while dragging a finger up/down on the touchpad.
2. Position the arrow pointer over the scroll bar slider; Press the Yellow Button; Drag your finger up/down on the touchpad.
3. Click the mouse pointer on an inactive part of the screen, then use the Up and Down buttons in the lower right part of the keyboard.
3. As with most touchpads, drag two fingers horizontally or vertically.

I use this keyboard daily and have been very happy with it. It has a few quirks, but nothing close to a deal breaker. If you need a wireless keyboard, give this one a try.

Highly recommended!

I cant say about battery life yet cause its been just a month buying this keyboard but i will review for it again but now i will say that the keyboard need AA 1.5v batteries which is brilliant cause those batteries you can buy from anywhere.
Just somedays ago i was in my home with keyboard in my hand walking and it slipped off and went straight flat on floor my balls went straight up in my head! I thought its done. But no not a single scratch Still work totally fine. I even tried shaking if anything broke inside, i hear nothing. I will say the durability is pretty good.
Now main part. I just loved the keyboards shortcuts!
My most used shortcut key is “home” button on ‘f2’ if you are doing your work and quickly want to google something just press the home button and your default browser will open in no time(i mean that’s on your ram) but it is very sorted.
And another key is the volume keys above touchpad. The mute, vol down, vol up. The most sorted and handy design.
The 1st mouse click! you wont know without using the keyboard how importantly usefull the yellow mouse(on topleft) button is. speaking of click there is this problem *if i am using touchpad button or double click on touchpad to select a text i dont know why it always left first letter of the text. like if the sentence is “Kryptonite is green” it will select “rypton is green” but if i use the yellow click on topleft of the keyboard then it select perfectly similarly if i want to reduce the size of a window by double click(or first touchpad button) on the corner of the window and drag i wont do it you need to use the yellow button to do that. Sometimes this get irritating.* Idk is that software problem or the keyboard. I mean ofcos you never get full satisfaction in your life the nature always balance.
Theres more shortcut button to open virtual desktop, switch screens, minimize window, toggle through windows only by one button no need of “ctrl tab”(you can use this shortcut if you want)
Just in a month i am so use to this keyboard that if i am using laptops keyboard i go for shortcut keys and it starts something else and then i go like oh hell.
NOW THE MOST BRILLIANTLY SORTED THING IS….i have coolingpad for my laptop and i dont disconnect it untill i taking my lap outside. The coolingpad have extra two 2.0usb ports which i never use. So i put the keyboard receiver in one of those extra usb ports. And i am never gonna look at it again and now EVERY MORNING I WAKE UP, I TAKE MY KEYBOARD(which is always on my bed), TUNR ON KEYBOARDS POWER BUTTON, OPEN MY LAPTOPS LID, LIE BACK AGAIN, UNLOCK MY LAP AND CONTINUE MY WORK FROM WHERE I LEFT LAST NIGHT.
HOW FREAKING SORTED IS THIS!!!?
Press “helpful” below if you think it was helpful for you. 😀 \m/,

Just had it delivered a few hours ago. Tried it with my mobile (had to get a small OTG adaptor to get started). I also own the K480, and got this one because it has a touchpad. Comparing the two, both have unique features that I would not call positive or negative, because how one views a feature, or the lack thereof, depends on one’s requirements. The plus-point of the K480 is that it connects through bluetooth, leaving the port free to charge the mobile (if you want to use it with your mobile/tab) or connect a pendrive to it. The keys are larger and better spaced out (important if typing comfort is a major priority). The K400 plus, on the other hand, requires the OTG adaptor, plus, the unifying receiver used to connect the keyboard to devices like the mobile, tab, or the LCD TV. The plus point of this feature is that connection is immediate. The minus point is that one must be careful not to lose the ‘unifying receiver’. Also, if you forget the OTG connector, there is no way you can connect the keyboard to anything. The ‘K400 Plus’ is also lighter and slightly tinier: But comfortable enough for normal to large sized fingers to type without any obstacles. Unlike the K480, this piece has the touch pad. One main advantage of going for these keyboards ( be it the K480 and K400) is the amount of money saved…in my case, I saved 28K approx., the amount I would have to invest for getting a new laptop. And just didn’t have the money to invest in one. Now, with this, I can complete most college assigments. And a couple of years later when my phone conks off, I can simply get a new smartphone for about 8-10K. If one calculates the interest accumulated, one has way more in one’s hand than one thinks.