Dell C1760NW Color Laser Printer - Manual (Page 156)

154 Loading Print Media
8 Adjust the width guides until they rest lightly against the edges of the stack of print media.
9 Slide the length guide towards the printer until it touches the print media.
NOTE: Depending on the size of print media, first slide the length guide backward until it stops, and then slide the MPF
extension until it touches print media.