[Elecraft] Computer Keyboard and P3/SCGA

[Dauer, Edward]

Need help figuring out what may be an elementary problem with a computer and the P3/SVGA.
Here's my objective:  I would like to use a single wireless keyboard  / mouse both to operate the text functions on the P3/SVGA, and to enter data into the computer itself.  While operating I like to switch my monitor back and forth between the P3 and the Internet.  That's easy enough, with a DB15 switch box.  But I can't get the keyboard to mate simultaneously with two of the USB receivers (or whatever those little things are called) - one in the USB port of the P3, and the other in a USB port of the computer itself.
I am using a new Logitech keyboard and mouse, each of which came with a USB receiver.  Logitech has an app that allows up to six devices to communicate with a single receiver - e.g., keyboard, mouse, and whatever else through one receiver into the computer.  But when I mate the keyboard to the receiver plugged into the P3, it no longer communicates with the receiver in the computer, and vice versa.  In other words, I can mate multiple interface devices with one receiver, but I can't mate two receivers with one device.
That makes good sense.  If it were otherwise, it would likely cause no end of chaos in a multiple-computer environment.  But it leaves me with the question - is there a way to use one keyboard switched on the fly with the P3/SVGA and the computer itself?

Ted, KN1CBR