False
http://wiki.answers.com/Q/Is_Docking_stations_are_usually_smaller_than_port_replicators_and_do_not_have_speakers_or_PCI_slots
No, the opposite is true.
Yes.
docking station. it does everything a port replicator does plus can add ram. i think...A docking station has all the features of a port replicator plus extra slots for adding secondary storage...