If the printer is connected directly to the computer's USB port, it should be visible in the list next to "Choose port".
Note: the printer must be connected and switched on before the TurboPrint control center started.
There may be several entries for your printer if there are several port drivers for this printer port – e.g. a USB printers is listed once with TurboPrint's "TP-USB" port driver and once with the standard "USB" driver of the CUPS printing system.
Choose the entry that contains "TP-USB" (URI = “tpu”) so that the printer status can be displayed in the TurboPrint status monitor even while printing.
For printers connected to the computer's parallel port, choose the entry "Parallel Port 1“.
If your printer and printer port is not visible in the list, try to set up your printer using the choice "other printer".

The following "Connection" types can be chosen:
Network printer - LPD
Windows network printer - SMB
Network printer – Socket / Jetdirect
Linux network printer - IPP
File
other (CUPS URI)
First you have to determine which connection type is suitable.