I have the Sony DRU-710A and (while trying to repair my motherboard) noticed I had connected it with a SPDIF (2-wire) cable. When I removed the drive I saw:
Label on top of drive indicates this connector is "Reserved"
Checked manual. It states "Do not use".
but embossed into the backplate of the drive the port is labelled "Digital Audio"
It has been a long time since this machine was running - I don't remember if audio was working.
Anyone know the story here? Does it have SP/DIF?