The previously reviewed Logitech Solar Wireless Keyboard is one of the group of wireless products from Logitech that can share a unifying receiver. The receiver, which you get with each product, is very small, projecting less than 1/2″ from your usb port, and allows me to put my laptop in my case while still attached. Multiple devices can be used with just a single receiver, freeing up usb ports and giving you extra receivers in case of a failure.
Of the products that use the unifying receiver I own the previously mentioned keyboard, the M570 Wireless Trackball and the Wireless Headset h800.
I have rather severe arthritis in my left thumb at the very base where the thumb connects to the wrist and was told in 2004 that I would need joint replacement within 5 years. Eventually I switched from mice to trackballs and quit having any pain at all from the thumb (even though I also quit using the brace). The Logitech M570 is my favorite trackball of the ones I have owned. You don’t have quite the control and accuracy that you do with a mouse so I do switch to a mouse for working in Photoshop and the like, but for regular tasks, I prefer the trackball.
I haven’t had the Wireless Headset h800 for long but like them very well for my purposes which is using them to take advantage of voice control for my PC. I wear them for up to 4-hours at a time and find them quite comfortable, but I have not used them for listening to music so can’t really evaluate that aspect.
Pairing of all three devices is instantaneous and trouble free, and I don’t think that I have given up anything in exchange for the convenience of the single receiver. The keyboard and trackball are both excellent products compared to similar devices that I have owned through the years. It is harder to give such praise to the headset, in part because I have limited experience with it, but also because headset preferences vary greatly from one individual to another due to comfort issues, etc.
Logitech does offer quite a large range of products that will work with the unifying receiver which are shown on the following web page. Please note that my headset is not shown on the page, nor are any headsets, so this is apparently not an exhaustive list of compatible products.
I would also like to thank Cool Tools for making our Christmas a bit merrier since several of the gifts I gave were purchased after seeing them on the blog and they all went over very well!