HP Deskjet 6540 Color Inkjet Printer - Manual (Page 15)

1. Out tray
2. Envelope slot
Use the envelope slot to print single envelopes.
Raise the Out tray to load paper.
To prevent paper from falling out of the Out tray, pull out the Out-tray extension, and
then unfold the Out-tray extension stop.
1. Out-tray extension
2. Out-tray extension stop
Do not unfold the Out-tray extension stop when printing on legal paper.
HP Deskjet 6500 series printers User's Guide
15