6.Insert the two installation screws that came with the automatic document feeder into the screw holes, then tighten the screws with a coin.
7.Remove the protective foam block from the automatic document feeder’s mounting bracket, and then gently close the automatic document feeder.
Remove the foam block after tightening the 
installation screws.
8.Attach the automatic document feeder’s cable to the scanner’s OPTION connector. Tighten the screws.
9. Close the automatic document feeder.
30 Using Optional Equipment