Windows Port Number ConfigurationThe port number for the NGT-1 can be found in Windows ‘Control Panel->System->Device Manager’ under ‘Ports (COM & LPT)’. Find the NGT-1 in the list for the USB variant. When using a USB to serial converter cable you will see the name of the converter cable with no reference to the NGT-1. If you have connected to an RS232 port on the PC this will be listed as a ‘Communications Port’, again with no reference to the NGT-1.To change this number, double click the NGT-1 and select the ‘Port Settings’ tab. Click the ‘Advanced’ button and change the port number to the one required.