The Logitech Wireless All-in-One Keyboard (TK820) is a combination keyboard trackpad model which I bought in the middle of 2014 for use at work as a replacement for a generic HP keyboard. The keyboard itself is super sleek, and I anticipated the ample trackpad would help alleviate some discomfort I was getting from using the mouse all day.
It’s taken me a while to formulate opinions on this one because I really wanted to like it, but ultimately it’s a bit of a lemon.
The keyboard is actually extremely nice to use. It has chiclet style keys which are my preference, though they’re slightly rounder than your average Apple keyboard.
Typing is great, the keys are springy and responsive, there’s no wobble and it’s not especially loud. The mechanism is extremely satisfying, and I can’t get enough of it.
There’s no number pad and by default the function keys are mapped to media key functions, though you can switch this easily in Windows or Linux using the software. (I’ve been using Solaar under Linux, and it’s simple but effective.)
There’s nothing especially remarkable about the keyboard layout. Everything’s where it should be if you’re used to a standard laptop keyboard. It’s not a Mac layout which is great for Windows and Linux, though I imagine it’d be annoying to use with Mac OS.
Overall, the keyboard is excellent to use, and I’m really happy with it.
The trackpad is a different story. I was originally drawn to the large size with the expectation it would be a good substitute for my laptop trackpad however this is not the case.
The trackpad is laggy, slow to register movement, has an irritating click mechanism that makes the entire thing wobble, and generally makes me frustrated.
For starters, I’m not sure what the surface is made out of but it’s nothing like the silky smooth glass of the Magic Trackpad for instance. I find my fingers get “stuck” while I’m using this trackpad, which makes it difficult to use accurately, and also makes the surface wobble in it’s recess.
Further, the thing seems to go to sleep and takes a few hundred milliseconds to wake up and register I’m trying to do something. Combined with a generally laggy input, I do not recommend this device for anything but the most basic of use. It’s certainly no good as a day-to-day input device.
As a lesser issue, I was unable to reverse the scroll direction to use natural scrolling.
The one killer bug that makes this keyboard insanely frustrating to use is an issue with repeated inputs. When using the trackpad and keyboard at the same time, the keyboard component has a nasty bug that makes it repeatedly send (or hold down) whichever key you last pressed.
This is easy enough to repeat by tracing a circular motion on the trackpad and pressing a letter on the keyboard; the letter you pressed will be virtually stuck down until you release your finger from the trackpad. It’s insanely annoying, and has on several occasions closed all my tabs in Chrome when
ctrl+w gets stuck down.
Unfortunately I quit using the trackpad due to this irritating bug, but recently I’ve found the keyboard doing it during regular operation. I’m not sure if this is a bug in the wireless protocol during congestion or what, but it’s killed the keyboard for me.
Overall, this is a great keyboard with a gimmicky and broken trackpad attached.
The keyboard is a really masterful piece of design, and Logitech would have a total winner on their hands if they hadn’t added the trackpad, but as it stands it’s definitely a stinker.
I’d struggle to recommend this keyboard at all due to the bugs, however it might be appropriate for a home theatre PC setup, or something where mouse input isn’t regularly required.