Powermac G3 what's this part for

You made me get up and go look at mine

The part didn't jump out at me, and I didn't find a similar part on any of the B&Ws I have here.

With that said, my initial thought was that it's a Zip drive blanking plate. All the ones I have here at home(plus, I think, my one at work) have Zip drives so if that's the case I couldn't find one because I've never had one

In addition, the design is different from the blanking plate used on later G4 graphite cases. The cases on those are effectively identical to the ones on the B&W G3.

So, is that a good enough non answer?

 

That is a plate for the rev. 1 B&W that blocked the 3 drives bracket on the bottom on the case.

--- Post Merged, May 10, 2016 ---

You can see it on on 2:46

 

That's correct. Had a small Phillips head screw that keeps the drive sled from sliding to the right and unlocking.