From: ibmmuseum@gmail.com   
      
   > Look at the upper right, Silicon Graphics. I don't know enough to   
   > even guess if this is a 3151, or which model, or if this a special   
   > mojo unit. Possumble it's all of them. Or none of them.   
      
   The ports don't match up - there is both a 25-pin parallel and serial port   
   (plus the personality cartridge slot). I've got the back of the unit shown at   
   this timestamp: https://www.youtube.com/watch?v=P1Af11nO4H0&t=1294s   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)