I wouldn't chuck or sell the router they give you, just stick it in a drawer. They will not support you if you have problems unless the supplied router is used. The worst case scenario is that you have to plug it in to allow them to test the line, the best part is that you have a spare to find out if a problem is your own router or the line itself. My ISP (BE) are quite candid about this. They say you can use any router you want, just keep the supplied one for any troubleshooting. They will aslo charge me if I leave and don't return the router. I would expect VM to do the same.