Obviously, that statement was patently false. You can see that the different receivers operate at varying channel frequencies, but there is not a different one for each individual receiver sold per unit.
This is why there can sometimes be problems when the mice and keyboards are too close together, such as when moving the cursor with a mouse on a different display.
However, whether you can purchase the receiver separately from the mouse and keyboard is another story. I would suggest that you contact Logitech and ask for a replacement. Or perhaps you can locate someone who has a receiver they would be willing to sell to you.
Correct, they use different channels. However, the newer stuff still has a security code. The different channels are to keep away from interference, but with the newer stuff, you still cannot use a different mouse/receiver.
we get a lot of people in our store asking the same thing, usually just after a cordless mouse and keyboard has dissapeared from the display isles. i'm not suggesting anything here, just curious how you could manage to have lost it. broken it yes, but lost?
Although it has a lot of good ideas, beer doesn't know anything about computers!!!