Hi Collnick,
Welcome to the Vodafone UK eForum from all of the team.
To be honest with you, there shouldn't be any issues here however we will need to get the modem unlocked before the Australian SIM will work in the modem, to request an unlock code for the modem simply fill in our
online request form with the modems details.
Once you receive the code and have unlocked your device you will then need to install Vodafone AUS VMC (Vodafone Mobile Connect) software to connect to the internet with the dongle and the Vodafone AUS SIM.
James
eForum Team