Logitech Wireless Solar Keyboard K750

Although it does operate with Macs, the K750 is only officially compatible with Windows systems, and was tested in Windows 7. Logitech supplies very little in the box: there's the keyboard, a cleaning cloth and a two-part RF receiver used to connect to a computer. Technically, only one piece of the receiver is actually needed -- because it's designed to sit flush with a notebook's USB port however, an adapter makes life easier for desktop users.

Beyond some simple diagrams on the packaging, the only manual for the keyboard is at Logitech's website, and this is just as well. Installing and configuring the K750 can't be much easier. A watch-style battery comes pre-inserted, and after plugging in the receiver and flipping the keyboard's "on" switch, a Logitech configuration program kicks in automatically for Windows users.

The process puts a piece of software called the Solar App on your computer, which is triggered by a special hardware button and displays light levels in the form of a lux meter, and battery level as a percentage. The meter has to stay above a certain threshhold in order to avoid draining the battery; two lights on the keyboard, alternately, can be used to determine a simple "good" or "bad" lighting situation.

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