You can target a specific dongle using the busnum & devnum options to devn-pegasus driver. This option is not supported in 6.5.0 or earlier, however, they have been added for the next release.
NOTE:
This entry has been validated against the SDP version listed above. Use
caution when considering this advice for any other SDP version. For
supported releases, please reach out toQNX Technical Support if you have any questions/concerns.