The wrist rest is literally built onto the keyboard and is not removable, but there's nothing to complain about it. Why? Its Leatherette cushioning is friggin' comfortable, by far the best wrist rest I've laid palms on.

Poor typing posture can wreak havoc on your wrists, but few people take the time to correct such hazardous habits. Enter Microsoft's Natural Ergonomic Keyboard 4000.

Good design; padded palm rest,

Little too expensive

The Microsoft Natural Ergonomic Keyboard 4000 can help you keep RSI therapy off your list of things to do this year. The split keys and the angled keyboard keep your wrists in a more natural and comfortable position, and the dedicated (and programmable) buttons reduce the amount of mousing you do

Ergonomic design leads to wrist comfort; Enhanced function keys for common shortcuts; Five programmable favourites keys; Dedicated back/forward keys for Web surfing

Takes up a lot of desktop space; Isn't compatible with PS2 adapters

How ergonomic do you want to be? Microsoft 's newest PC/Mac keyboard gives the company four different variations of the familiar QWERTY layout, from classically flat to roller-coaster curved. It's the weirdest-looking, but promises to be the most comfortable, of them all.

We checked out a mouse/keyboard kit about a week ago and today we have another keyboard from Microsoft. I have always been a fan of the natural keyboards and was sad to see when Microsoft released the less natural keyboard, but boy was I wrong.

Split keys: you either love them or hate them. The ergonomic design, built to reduce RSI and enhance your comfort, can take some time to get used to, but after going through a month of irritation relearning to type, a lot of people never go back from Microsoft's Natural Ergonomic Keyboard 4000.

You can find much cheaper ergonomic boards than the 4000 but none with the same great design or interesting additions. It looks nice, and – most importantly - is extremely comfortable to use. Well worth shelling out for.

The Microsoft Natural Ergonomic Keyboard 4000 is a small but interesting step forward for Microsoft. While you may be familiar with Microsoft's Natural Keyboard Elite Pro which has been around for almost seven years, the Natural Ergonomic 4000 adds a curved keywell to the split, tented design.

Aside from my key switch and programmability complaints, this is a great keyboard; The additional parentheses keys above the numeric keypad are a huge help when doing calculations; The range and number of programmable additional keys is good, with application and program control extended to anything...

This keyboard would be the perfect; all around productivity keyboard if it had professional quality mechanical key switches instead of the membrane key switches found in almost every consumer keyboard on the market.

After using this keyboard at home for a month, I talked my boss into getting the company buy one for me at work. Since, I have had no problems with my wrists or hands hurting. I am very impressed with the Microsoft Natural Ergonomic Keyboard 4000. In fact, many co-workers also wanted the keyboard.

Padded wrist wrest; Great ergonomic design; Programmable keys

Keys are soft; touch typists might not like

Microsoft is the only hardware company still engineering new ergonomic keyboard designs, but that doesn't mean they've gotten lazy. Their new Natural Ergonomic Keyboard 4000 is the most comfortable computer input device I have ever used.