I have EOS RP. This model has USB-C which I love.
I got GPS-E2 with two cables for other cameras connectivity. Long and short, but both has the same socket for pluging in to GPS unit and probably other camera models.
I am looking for a cable which can connect GPS unit ( quite rare socket) and any P/Mac with regular USB female port.
One reason was to update for latest firmware.
I do not think GP-E2 stores logs in the camera memory card. The logs are stored at the GPS unit. That is why it can be used as a stand alone tracker, syncing and adding logs to camera after.
connecting to PC would allow save logs on computer and port those into various mapping apps, such as Google Earth.