Yes, that is what I wanted to do. Feed Oppo PC signals, but only US Oppo 103 can be modified to accept HDDs without interruptions from Cinavia, so I sent my EU based Oppo back.
But seeing how well my Pana looks like on the OLED, I'm starting to question the higher valued Oppo has over any fairly valued stand alone bluray player. If it mean less, well then you could buy an used Oppo 93/95 instead.
IF it has not been firmware upgraded and ruined for you. Expensive, but then you would get, at least 2tb worth of HDD movies, it could be it was 4tb, but quite sure it was only 2tb it supports. It doesn't matter, I have an 8tb HDD + a 2tb HDD.. if I wanted to, I could, once I settled for a movie I wanted to see, moved it from C:/ to B:/ and still get 10tb worth of movies to play via Oppo. You should try Cinavia-free Oppo on Ebay and you shoud be good to go I guess.