... “Ports (COM & LPT)”, and you will find out “USB serial port (COMx)” (x is a digit from 1 to ... that connect PC with SG72 module, the “USB serial port (COM[x])” will disappear, again connect ... USB serial port (COM[x])” will appear again, please don’t forget the “x” in COM[x]. 10, SG72 module driver ... port on HGM6310/6320 is same as “USB Serial Port” on Computer Management. SG72 Generator inverter module