I finally was able to get my 7100/66 going last week. After several unsucessful attempts at an OS install, I bought a couple of SCSI drives on Ebay. I put one in, and the computer almost immediately booted up to an OS 8.1 desktop. In any case, though, I noticed when I opened it up to change the hard drive that the internal speaker was disconnected. I can't seem to find any obvious place where it should plug in. Can anyone point me to where on the logic board(I assume) the logic board should connect?