[Elecraft] KPA500 AUX Button & Serial cabling

[Bill Coleman]

I don't see the AUX band button mentioned anywhere in the KPA500 manual. 
Whatzit do?  :-)

Also, I think I saw a post regarding the KPA500 needing it's own serial 
port, true?  Is it just for firmware install?   And the XCVR serial port is 
just for Kenwoods?

Would be nice (*) for a K-Line to simply daisy chain the K's together: 
  PC -> KPA500 -> P3 -> K3      (* = simpler for 1-port PCs, no cable 
thrashing)

Patiently waiting for my April 6 ordered KP500/K

73, Bill  N2BC