[General Maximus]

ya, although it isn't so much as what is compatible with the shub 3, it is what the shub is compatible with. You can be 99.9% sure that if you ever have a networking issue it is the shub that is the problem but that is more to do with general stability and quality rather than compatibility problems. There are international standards it has to comply with to guarantee it will work with other devices but the whole point of putting it in modem mode is that you are getting it to do as little as possible, not getting it to do any real networking stuff and leaving it all to a proper router.