You notice that the network card has the capability to run on both 10Mbps networks and 100Mbps networks What must be done to allow this card to run on one network type or the other?
By definition nothing, the card should automatically detect
which type of connection it has, but it should be noted that the
other hardware that makes up the network needs to be able to
operate at the speed that you want. That is if some component that
makes up the connection between your computer and the one you are
communicating with is at the 10mbps speed then the whole connection
will be running at that speed.