I have in my grubby hands a DECstation 5000/200 which in itself is not
really that interesting, but TC 1 and 2 are occupied by a, what looks like a
RAID card for an external RAID box.  The plug looks just like the plugs on
out Compaq server that have external RAID boxes.  The plug is NOT a 68pin
but the wider roughly 100 pins.

The cables we have at work are Y cables with standard high density SCSI
plugs at the end.   So I guess the TC card could just be a dual SCSI card.

The card says DICEON 6A, on the end of the card.

Ring a bell?

jam