This is great news for those of us with multiple Logitech wireless devices, of course it does mean our next upgrades will have to be unified compatible but....it's all good 

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Logitech's new Unifying receiver is a tiny USB nubbin that can wirelessly connect to one or more keyboards and mice, freeing up ports and space on your computer.
The new peripherals that work with the receiver are the Wireless Keyboard K350, Wireless Keyboard K340, Marathon Mouse M705 and the Wireless Mouse M505. Those first two keyboards will be dropping next month for $60 and $50 respectively, while the M705 mouse will hit early next year for $70. The M505 will be available later this month for $50.
Logitech Unifying Receiver Eliminates Need for Multiple Wireless Receivers for Keyboards and Mice
Tiny USB Receiver Debuts with Logitech Wireless Keyboard K350, Logitech Wireless Keyboard K340, Logitech Marathon Mouse M705 and Logitech Wireless Mouse M505
FREMONT, Calif. - Aug. 4, 2009 - Today, Logitech (SIX: LOGN) (NASDAQ: LOGI) introduced a convenient and clutter-free way for you to connect wireless keyboards and mice to your laptop – the Logitech® Unifying receiver. So small that it can stay in the laptop when you're moving around, a single Logitech Unifying receiver can be paired with multiple Unifying-compatible Logitech mice and keyboards – freeing up valuable USB ports and making it easy to mix, match and add to your existing setup, no matter where you are. The Logitech Unifying receiver is debuting with four new products: the Logitech® Wireless Keyboard K350, Logitech® Wireless Keyboard K340, Logitech® Marathon Mouse M705 and the Logitech® Wireless Mouse M505.
"At Logitech, we're always looking for ways to make life easier," said Rory Dooley, Logitech's senior vice president and general manager of the Control Devices business unit. "With this unique new receiver, now you can pick and choose the mouse and keyboard that work best for you whether you're at the office, at home or on the road."
Plug it. Forget it. Add to it.
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