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have to say a bit disappointed with this keyboard and it's being sent back. firstly, it weighs a ton!! I mean seriously heavy for a wireless keyboard. also, it's not quiet to type on, not even close. how anyone can think this is whisper quiet is beyond me. I'm using the old k270 to write this and it's feather light and positively silent compared to the k520. I'm a big Logitech fan, and this is the first of their keyboards I've ever had that I'm returning.
I bought this as a step up from my K270 to be able to connect my kit between 2 computers quickly and easily along with an MX Master Mouse (I didn't bother with the mouse that came in this bundle so cannot comment on that - although I will say it is a full sized mouse and looks OK).
Put simply, the MK520 keyboard looks good in the pictures but just looks and feels awful in reality. There's some transparent plastic that surrounds it that just feels tatty, flimsy and pointless - not the end of the world. However the finish and keys are awful; it has a sort of coarse matt finish that just looks cheap, and the keys are slightly oversized which means that you catch the keys adjacent to the keys you're striking if typing quickly, rather than having a decent gap between them.
Sorry Logitech, I like your kit but this one is a fail, after 5 minutes I boxed it up and it's going back - and I have very gladly re-instated my basic K270 which even though it doesn't do all the smartypants connecting, it has never missed a beat, it's compact but has everything you need and the keys feel nice. More expensive is not always better!
UPDATE - The product WAS great until the keyboard became unresponsive and would not register various keys. Contacted Logitech and got a replacement. Same thing happened again with the replacement. Upon further inspection opening the board up the rubber key mat had come loose and was not in the right spot. I reset it but the it continues to come loose. It must be a design defect. Steer clear.
Great product very responsive. The mouse is a little bulky though.
I've had this combo for about about 6 months but for the last couple of months both keyboard and mouse just freeze at random points. You then just have to wait anywhere upto 30 seconds until it decides to work again. I've tried replacing batteries, but no difference. I need to use a keyboard every day so have just given up in frustration and order a new, non-Logitech replacement. Avoid this combo.
Worked absolutely fine for about three months, but then the left mouse button started acting erratically. Sometimes I have to press really hard for it to register, sometimes a tap works, other times a click and drag turns into a double (or more!) click. This has gotten progressively worse over the fourth month, so much so that I've reverted to my previous, wired mouse.
I use the mouse and keyboard pretty much all day every day for work, and the mouse had started hindering my work.
Very good keyboard, the 'legs' seem to be much stronger than previous logitech keyboards that were always breaking, I repaired the last one with bulldog clips but eventually even the plastic that holds them broke so had to buy a new one, this one seems so much stronger. I have no used the mouse yet as the old mouse still works but am sure it will be as good as they always are.
I quite like Logitech stuff, but we bought this on a colleague's suggestion. They lasted a month before they asked for something better.
The mouse is tolerable. The dongle works just fine. But to type on that keyboard is a deeply unpleasant experience. Missed presses, a lack of feel and just generally being poor leads to frustration. We have cheap keyboards around which are perfectly OK to live with, as are many cheap mice. But the mouse has small, low quality sliders, and the keyboard is just miserable.
Nice feel mouse which I still use. Liked the layout and feel of the keyboard. Quite hefty keys compared with others I owned. Looks good. Caps lock light good feature. The G key developed a fault after 3 months daily use.at work.. have to de press it much harder than others. Opened it up to clean but problem could not be solved. Bought another Polaroid keyboard instead as they are pretty reliable. Liked but can't recommend it due to fault.
I have ordered this twice. The first delivery looked like a French keyboard and it had previously been opened and returned, so I started a return, stating reasons. The replacement was exactly the same. Also a foreign keyboard and obviously been returned before.