Samsung CLP 550 - Manual (Page 82)

U SING P RINT M ATERIALS 3.6
5 Do not exceed the maximum stack height. Overfilling the
tray may cause a paper jam.
6 Pinch the paper guide, as shown and move it towards the
paper until it lightly touches the side of the stack. Do not
press the guide too tightly against the edge of the paper as
the guide may bend the paper.
N OTE : If you want to change the paper size in the tray, refer to
page 3.7.
7 Slide the tray back into the printer.
8 When you print a document, select the paper type, size and
source in your software application. For details, see
page 4.7.