Mystery LSI-11 board

I got a LSI-11 (11/03) the other day that is pretty much intact, but will need some work. Included with the chassis, backplane and power-supply, were the following cards: Top LSI-11 CPU M7264 <----------><Quad> M7940 <dual> | DSD 1140-AA floppy ctl <dual> M7940 (aux1) | M7940 <dual> (aux 2) M7941 <dual> | M7944 <dual> (5) M7944 <dual> (1) | M7944 <dual> (2) M7944 <dual> (3) | M7944 <dual> (4) EMPTY | M7944 <dual> (bank) <------------------<Quad> Mystery/Terminator??----> Bottom I do believe the mystery card at the bottom is in fact a terminator/bootstrap?? (TEV11/REV11) But there are no numbers on the handles or on the board. The plastic handles are grey and are DEC branded. The board has a 40 pin connector. Having never seen a TEV11 or aa REV11 and finding little by googling, I'm wonder if anybody out there can enlighten me!! I took a picture and excuse me for the size, but I wanted to include as much detail as possible! http://personal.riverusers.com/~dponsford/qbus.html I also believe the DSD board is a floppy controller.However what looks like the model # on the side of the board: A/1140-6A a small ehite label on the 28 pin eeprom N82S 100I 7851. The controller has a fifty pin connector. Does this look familiar to anybody Thanks in advance for any help!! Tom