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