This was a replacement for my last Microsoft Natural Ergonomic 4000 Keyboard, because the old keyboard I had was getting full of crumbs and the letters were worn off a number of keys.

I've been using them for years, like the look of them. The quick buttons on the top work well, if you want to open a folder or a program, you can set them up on the My Favorites buttons. Overall, don't know why there isn't more ergonomic keyboards out there, but this one works just dandy.

Feels good on the wrists..; it's hard to go back to a normal keyboard once you're used to this

They last maybe 2 years with daily usage; Then some of the keys seem to not work 100% of the time, such at Ctrl

After having used this type of keyboard for years, I simply cannot go back to the old, flat, keyboards. This improves my speed and accuracy by 100%! You should know, however, that this did not come with an installation CD, which is not necessary for the basic functions.

Received the keyboard and did not respond with the problem until after 15 days when I tried to use the keyboard and found it unusable --keys stuck and space bar would not work. Tried to exchange it and Best Buy refused ... they said return with 15 days or nothing.

I mysteriously "lost" my favorite mouse. And every time I went to the store to purchase a new one they were sold out...Recently the connection was made. I have the Microsoft 4000 again. I purchase 2 because unfortunately like most items in this day and time its (disposable) being discontinued.

I started to use one at work. Now I have one for home too. Fantastic layout. Perfect for typing. I play games on it. It does everything.

I've been in an office atmosphere for the last 12 years of my life so I have pain in my wrists that flare up here and there. I bought this keyboard at the advice of my friend. It's definitely interesting looking and it takes a day or two to get used to but I LOVE it.

I have been using the wave style keyboards for 30+ years. I have large hands and the standard style keyboards are just too small. While I also have and use a Logitech wireless wave keyboard on another computer, the design of the MS keyboard is easier for me to type on.

Over the years paid a premium for Microsoft-branded products. Worth the extra cost due to performance and longevity. Until now. Keys started fading to the point some are now unreadable and when a few more become unreadable I will toss the unusable device.

Product does its job

Extreme key fade starting at 2-weeks use

I used this at home for a number of years until I knocked a drink onto it. Decided to replace it with a different ergonomic keyboard, and I still regret it. I absolutely love having the four extra keys above the numpad, they definitely help speed up programming (in C-based languages, anyway) since...

- Very comfortable; wrist pad is nice

- Spacebar is a little wonky if you don't press down close to the center