Zapco DC Intro - Manual (Page 10)

Loading Screen
This is the “splash” screen, while the program is loading
The top row of LEDs shows the port the amp will connect to (in this case it is
COM Port 5)
The second row of LEDs shows the position of the amp in your network. If you
do not use any of the addressing switches (all are left up) then your amp will
always come up in position 1.
COM Ports can sometimes be an issue in Windows. Any time program does not load properly,
or, if you can not log on, see slides on “Assigning COM Ports”