Samsung SL-M4075FX/SEE User Manual page 48

Media and tray
The duplex unit is preset to Letter/LGL or A4 size, depending on your country. To
change the paper size, adjust the guide as shown below. Paper quantity indicator shows the amount of paper in the tray.
1
2
1 Full
2 Empty
If you do not adjust the guide, it may cause paper registration, image skew,
or jamming of the paper.
2. Menu Overview and Basic Setup
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