token ring
A big competitor to Ethernet in the past was Token Ring, which runs at 4 Mbps
or 16 Mbps. Token Ring is a network architecture that uses a star ring topology (a
hybrid, looking physically like a star but logically wired as a ring) and can use
many forms of cables. IBM Token Ring has its own proprietary cable types, while
more modern implementations of Token Ring can use CAT 3 or CAT 5 UTP
cabling. Token Ring uses the token-passing access method.