I was working in UCL-CS when the first Cisco router arrived. Prior to that it had been a fuzzball/imp and then a BBN butterfly, which were large pdp11 size boxe

I was working in UCL-CS when the first Cisco router arrived. Prior to that it had been a fuzzball/imp and then a BBN butterfly, which were large pdp11 size boxes. This was a small wine case sized ice cream coloured rack mount. It was the single most noisy cooling fan unit in the machineroom. It literally screamed. We could hear it over two vax, and a pyramid. It also blew air the least performant direction, for rack cooling. Jokes aside it was a very cool device, but the jokes about engineering pre release quality were large. This may be the unit in the science museum London.