On newer 486 and all Pentium (and above) machines, the parallel port is integrated onto the motherboard and you can set its mode in the BIOS setup. Don't rely on what is control cable (click) port mode your BIOS setup shows. On 286, 386 and older 486 machines, the parallel port is on a separate card (e.g. I/O card, parallel port card, Hercules video card with a built-in parallel port) and it is SPP or PS/2. For example, you might wish to inspect the matching video clips to get of sense of whether automated face identification is robustly recognizing the person specified in the query. When viewing a graphs on the main Stanford Cable TV News Analyzer site, clicking on the graph will display a random selection of video clips that matched query's filters at that point in time. A faulty ribbon cable that leads from the main circuit board to the controls and display module? I removed the screw and finally I gained full access to control board so I could inspect and test the ribbon cable attachment and buttons.