C'mon folks, say it with us now: "finally!" While those utilizing Bluetooth-enabled input devices have enjoyed the ability to connect multiple wares to a single computer without any fuss, those relying on a USB keyboard and mouse have typically been forced to block a pair of their USB ports in order to have both operating simultaneously. Thanks to Logitech's marvelous new USB Unifying Receiver, said issue is no longer an issue. Designed to operate with the Wireless Keyboard K350 / K340 and Marathon Mouse M705 / M505 (all of which are being jointly announced here), this compact receiver is tiny enough to stay inserted in one's laptop even when it's stored, and while we can't fathom why you'd need a half dozen devices linked at once, the nub definitely supports it. Each of the four new products will ship with one of these special receivers, with the keyboards expected to arrive in the US and Europe this September for $59.99 (K350) / $49.99 (K340) and the mice landing later this month (Europe) / early 2010 (America) for $69.99 (M705) and $49.99 (M505). Incredibly informative demonstration vid is after the break.