What is the difference between a hub and an MSAU?

A hub is a basic networking device that connects multiple Ethernet devices, allowing them to communicate as a single network segment, but it operates at the physical layer and does not filter data. An MSAU (Multi-Station Access Unit) is a more advanced device used in token ring networks, which provides a way for multiple devices to connect while managing token passing for data transmission. Unlike a hub, an MSAU can help control data flow and reduce collisions by intelligently managing access to the network.