There were some macs that had to have a 10 base t hub to/before
connect(ing) to 100 base t
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Generally, the AAUI "dongles" are adapters for the odd Apple port
that many Macs had when there were several different ethernet
"standards"
jockeying for dominance.
The ones that usually give problems with autosensing routers and
switches are those, particularly early models, of Asante brand
devices. All you really need to do is stick a "dumb" hub between
the Mac/AAUI adapter and the switch/router. You can often find
these old hubs at places like Goodwill for loose change.
Ken
http://mysite.verizon.net/res7gt1w/stackomacs