HP LaserJet 5100 Printer series - Manual (Page 31)

ENWW
Chapter 2: Printing Tasks 27
Adjust the Paper Stop
For printing stacks of large paper only,
the paper stop on the top output bin
prevents long paper from being pushed
over the edge of the printer.
1 Push in the center of the paper stop
to release it.
2 Pull the paper stop out until it stops.
3 Flip up the end section.
4 Adjust the paper stop to the desired
size.