Ok, search didn't help so I have to ask.  Every wireless mouse I see is 2.4 gh.  I have 2 pc's on desks within 5 feet of each other.  If I buy new wireless mice at the same frequency will they INTERFERE?  I hate wired mice, especially for cadcam, when the wire moves the mouse as I let go it can be bad.  Bad costs money.  Any SUGGESTIONS?An item of wireless desk equipment such as a mouse or keyboard is 'paired' with its own receiver. That is, within the wireless band used there are multiple channels and each receiver/mouse pair will use a different channel. If you happen to get two mice/receiver pairs which are set up on the same channel, usually you can retune one by pressing a pairing button on the receiver and then one on the mouse.

Even so, two wireless devices can sometimes interfere by blanking or reducing each other's signal; you can get this effect if you have a cell phone on the desk too. In this case you would move them apart slightly.

So CHECK that the models you plan to buy have channel selection/retune BUTTONS. GENERALLY a manual will be available online.