HP Color LaserJet Enterprise Multifunction M680 Printer series - Manual (Page 33)

Table 2-2 Tray 2 and the 500-sheet trays paper orientation
Paper type Image orientation Duplex mode How to load paper
Preprinted or letterhead Portrait 1-sided printing Face-up
Top edge at the left side of the tray
Automatic 2-sided printing Face-down
Top edge at the left side of the tray
Landscape 1-sided printing Face-up
Top edge toward the back of the tray
ENWW Load Tray 2 and the 500-sheet trays 21