Apple PC Compatibility Card (Installation) - Manual (Page 38)

3 Remove the lower port cover and set it aside.
You won’t need the port cover for the rest of these instructions, but save it
in case you ever remove the PC Compatibility Card and need to cover the
port again.
Installing the internal PC audio/video assembly
1 Pick up the internal PC audio/video assembly, and unfold the two folds in the cable.
Unfold the folds near each connector so that the cable is straight.
Remove the lower port cover.
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