HP Color LaserJet CP3520 Printer Series - Manual (Page 109)

2. Adjust the paper-length and paper-width guides by squeezing the adjustment latches and adjusting
the guides to the fully opened position.
3. Fit the HP postcard media insert into Tray 3 and then slide the insert to the right until it snaps into
place.
4. Load 4 x 6 inch (10 x 15 cm) paper into the tray face up.
ENWW Load trays 97