Question about UNIBUS terminators, M9300

I have an M9300 bus terminator which I read is the same as a M930 with the NPR logic (so you don't also need an NPR terminator in slot 3/4). I don't want to blow anything up, but I am thinking I can replace the M930 and G7273 in the last slot of my backplane with a W2-open M9300. I have discovered past threads in CCTECH about this card, comes up every so often. There are jumpers on this card. W1, W2, W. I did not find any specific examples online of scenarios for the jumpers so I have a question of confirmation to my understanding: I think I get why one would remove the W2 jumper but if W1 is removed (open) instead can someone give me an example scenario for when you'd want to use this card "for beginning of non processor bus termination". Can someone give me an example of when you'd do this? Something to do with expansion cabinets? b --