That's a backplane holding some dual and single slot cards
controlling the tapedrive.
It's counterpart is the set of cards in the computer itself.
Ed
In article <11030.62.177.191.201.1136992808.squirrel at webmail.xs4all.nl>,
"Edward" <quapla at xs4all.nl> writes:
More stuff found during cleanup,
about 15 boards for the TU-10 internal controller
$20 + your choice of shipping.
What's the "TU-10 internal controller"?
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