the connection
from the controller board (UNIBUS or QBUS) is a
straight cable AFAIK. The RX01 and RX02 exist as a table top box and
uses a DB25 connector to the controller.
Not all RX01's have a DB25 to connect to the controller, on the ones I
recovered with an 11/23 system (rackmount drives), there's just a
ribbon cable connecting the two berg connectors on the controller and
drive together.
Pat
I believe that the DB25 is only used on the tabletop version, which has
the usual rack-mount RX01/RX02 mounted inside a nice tabletop box.
Inside the box the ribbon cable coming from the RX01/RX02 boards
connects to an adapter that converts it to a DB25 connector.
I have a tabletop RX01, but I removed it from the tabletop case and
mounted it in an H960 rack.
Ashley