[Elecraft] Connections for K3S, P3 Revisited

[Byron Peebles]

I have had the K3S, KAT500 and KPA500 connected and configured.
All units are connected to the computer via USB so I can use the 
appropriate Utility.

Now, when I try to connect the P3 to the K3S there is this behavior.  I 
can only use the USB *or* the RJ45 serial.  Once I connect to the RJ-45 
serial, the USB is disconnected at the K3S and I lose access to the COM 
port(s).

I am guessing there is no value to the RJ-45 port once I decide to use 
USB, and I should use the USB-DB9 connector to connect the P3 to my PC 
for the P3 Utility.

I thought I had seen something where the PC connected through the K3S or 
P3 to the otyher, but I can't find that documented so I think it's 
recovered childhood memory.

In summary, I expect to connect PC-to-P3 via USB-DB9 and have only the 
DC-power and IF-BNC between the K3S and the P3.  DO I HAVE THAT CORRECT?

73, Byron