Dell S2810dn User Manual page 184

2 Grasp both sides of the MPF, and then pull the MPF from the printer.
3 Slide the width guides to the edge of the tray. The width guides should be fully extended.
4 Pull up the length guide and slide it toward MPF cover until it stops.
5 Load the print media into the MPF with the recommended print side facing up so that the top edge of the print
media enters the printer first.
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Loading Print Media