as we used to call it back in the day, also known as Token Ring. I was cleaning out some cupboards and found an old computer laptop circa 1996-1998, and found this in the PCMCIA slot, Token ring LAN speeds were either 4 Mbit/s or 16 Mbit/s, and it was very important not to connect the wrong device at the wrong speed to the ring, or you knew about it, as you brought the ring down, and all devices on it! I learnt that rule very quickly! Far better than ethernet in the day!
Token Ring PCMCIA adaptor
This post is dedicated to all those, at CSC/BASE, you know who you are!
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