Logitech MK540 Advanced Wireless Keyboard and Mouse Combo for Windows, 2.4 GHz Unifying USB-Receiver, Multimedia Hotkeys, 3-Year Battery Life, for PC, Laptop

simple , robust, working fine keyboard and mouse combo. nothing negative. feels nice to type.

Needed a replacement for an older Logitech keyboard and mouse, and this is an excellent product. Have always preferred the Logitech over other brands and wasn’t disappointed. The feel of the keys and the mouse seem better than my old keyboard. Favorite feature still is the one button activation of the calculator, which most keyboards don’t have.

I have been using this product for 7 months now and I’m not happy with it. It wasn’t cheap, it was $70+.

Let’s start with the mouse. It goes through one AA battery (Eveready Energizer) every 2 to 2.5 weeks (depending on how much gaming I do, constantly moving it). I had to go and buy a bulk pack of batteries because of this mouse. The batteries aren’t completely dead, but once they get down around 1V (tested with multimeter) the mouse stops dead, often with little to no warning (the red light). Also, the scroll wheel is starting to loosen up, and often rolls on middle-click.

The keyboard doesn’t go through as many batteries, two AA cells can last 2 to 3 months (it’s had 3 sets now, including the ones it shipped with), HOWEVER, the batteries buckle inside the housing, causing the keyboard to go dead intermittently and I have to reinforce it with a piece of doubled up electrical tape so the cover presses down on them. The letters on the keys are wearing off too.

I’m a heavy user, but that should be expected.

This is personal, but both the keyboard and mouse are too small for me. The main area of the keyboard is cramped (causes a touch typist like me to have to correct a lot of keystrokes) and I don’t like the feedback. The mouse is also not a very good shape for my hand. This may be of interest to someone considering new input devices, but it is not my complaint.

I’m tired of spending money on computer parts like a drunken sailor so I’ve lived with this, but I’m getting ready to ditch it.

Beware. Logitech input devices are NOT what they used to be.

The keyboard is quiet and a little soft but the tactile feel is really good with the springs and textured plastic keys. It comes with Duracell AA batteries for both devices and I’m looking forward to seeing how it does after 3 years. The problem I find is with the mouse, it is very small, and someone with large hands, it does not support the weight and size properly when gripping and it can cause hand strain. Also, there is no dpi adjustment and it seems to be a little jumpy with the default settings. The price is pretty good; $50 for both mouse and keyboard.

I’m probably going to use a different mouse or replace it with something better, but at that point I probably should have purchased them separately. Overall I would recommend the keyboard but not the mouse.

Gotta vent.

I’ve had my Logitech K800 forever and a day and LOVED it. Never any performance problems, smooth, comfortable, easy to use, and took a beating daily for years. Got it through work, so it was more expensive than your usual, but it couldn’t last forever. It started being unable to take a charge, so I knew I would have to retire it. (They stopped making these (WHY???) and they’re selling after-market for a fortune.)

I have Logi all things keyboard, mouse, etc., so went with them again. Bought a K650, but out of the gate, it started doing weird stuff, like repeating keys when you weren’t even touching the keyboard, jamming up, or just stopping functioning. Did all the usual troubleshooting, but nothing worked.

Just to save time, I sent it back here and replaced it with an MK540. Son of a gun if it didn’t start immediately doing the same things. NOW I was cranky, so I did my online research and learned these are well known problems for others, who also couldn’t solve them. I then went to Logi tech support. Got a level 1 person who walked me through the standard steps I’d already done multiple times (Did you turn it off and on again? :-D), gave me long lists of things to try, then at the end, when nothing worked said, “Well, it’s within 30 days so just return it to the seller, and here’s a link to our other keyboards.”

“Ummm,” I said, “this is the exact same circumstance with two DIFFERENT keyboards in a row. As I had no trouble with my previous Logi keyboard, and nothing else has changed on my end, it seems logical that the problem is with the new software, hardware or some QA problem with producing these models. Why would I go buy another one when we don’t know WHY it’s doing this, suggesting I could go through this all over again?” (BTW, a MAJOR inconvenience for days). Her answer (twice): “Don’t worry, it’ll be fine, just go get another one.” OMG.

Stubborn, so I gave it a third shot (MX Mechanical) now for 3x the money hoping better quality would help, but guess what? I’ve now received my 3rd notice from Amazon saying delivery will be delayed, this time with no date estimate known.

I tried, Logi, but even I am done. Buying a highly rated other keyboard that has all the features I need. Logi, not sure what you’re doing with these membrane ones (vs. mechanical), but it’s not working. If you could ship me a K800, I’d so appreciate it. 😀 K

I feel this is the nicest wirless keyboard/mouse combo I have owned.

Slightly larger without being overly big on the desk. Appreciate the multiple tilt feature of the keyboard that allows 2 upright levels in addition to laying flat in the desk. Keyboard is spill resistant which is a great feature. The tactile feel of the keys is just right and it’s a quieter keyboard than cheaper keyboards. The mouse is a bit bigger than cheaper keyboards but not overly big, but more substantial in feel than a cheaper Logitech unit I’m replacing. I like this keyboard so much that I ordered another one to use with my work from home PC. I also appreciate how the keyboard uses AA batteries than AAA batteries of the keyboard I’m replacing.