I am on an up to date Windows 10 machine.
Three COM ports worked in 004.
Skipped 005
1 COM port worked on 006
Changed menu to 3 COM ports, now I have no COM ports.
Set to 2 COM ports and I have 2.
Made changes both from Putty and the front panel. Same results.
Had power QMX down each time in order for Windows to detect the change.
1 works
2 works
3 = 0
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Randy, N4OPI