Cheap Network Cards? (Score 1)

I have a question about supported resnet network Ethernet cards. The required one sold by the unnamed Canadian University is over priced at $50.

What could be the possible risks of using a very cheap one from another maker? What could they do to me?

There is little no info from the university IT services just a web site that contains a copy of the network user agreement that absolves the university anything and everything.

What are the limitations of a network user agreement and my legal rights? Is a network user agreement like a software user agreement? Can anyone remember a legal case involving a network user agreement.