CAMBRIDGE IGCSE Topic 3.4 Media Access Control (MAC) address Also in this topic... CAMBRIDGE IGCSE Topic 3.1 Von Neumann architecture CAMBRIDGE IGCSE Topic 3.3 Primary storage, RAM and ROM CAMBRIDGE IGCSE Topic 3.3 Secondary storage, overview CAMBRIDGE IGCSE Topic 3.3 Cloud storage CAMBRIDGE IGCSE Topic 3.4 The role of a router