Geneq iSXBlue II GNSS Series Technical Reference Manual page 35

Click on the iSXBlue/SXBlue II icon, then on "Next". In the
"Bluetooth Setup Wizard Completion Page", click on the "Configure
Button and uncheck the "Secure Connection" option. The COM port
number that is assigned to the iSXBlue/SXBlue II will be shown (in
this example: COM8). Click "Ok" to close the "Bluetooth Properties"
window.
Hit "Finish" to complete the configuration. If the "Start the connection" option is checked, Bluetooth
connection will automatically be activated with the iSXBlue/SXBlue II receiver.
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iSXblue/SXBlue II GNSS Series Technical Reference Manual