The large Unibus extender

the cardcage of the large Unibus extender opened

I don't know anything about this thingy, except that it got some very large power supplies, some of which didn't want to run, and that it contains some of the oldest DEC parts i have ever seen, dating back to 1972. They are connected in their own backplane and seem to be something special, most of these modules aren't listed in the field guide.


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