HP Deskjet 6620 Color Inkjet Printer - Manual (Page 89)

3. In the Source drop-down list, click one of the following options:
• Upper tray: prints from the In tray.
• Lower tray: prints from the 250-Sheet Plain Paper Tray Accessory.
• Rear tray: prints from the Auto Two-Sided Print Accessory with Small
Paper Tray. This option appears only if the accessory is attached to the
printer.
HP Deskjet 6600 series printer User's Guide
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