Dell 5210n Mono Laser Printer - Manual (Page 109)

3. Slide the width guide to the far right.
4. Flex the sheets or envelopes back and forth to loosen them, then fan them. Do not fold or crease the print media. Straighten the edges on a level
surface.
5. Load the media in the tray.
Use the stack height label as a guide for stack height when loading print media.
NOTE: Hold transparencies by the edges and avoid touching the print side. Fan the stack of transparencies to prevent jams. Be careful not to scratch or
leave fingerprints on the transparencies.
Paper
Transparencies
Envelopes
NOTE: Load only one size and type of print media at a time in the multipurpose feeder. Do not mix sizes and types in the same tray.