HP Color LaserJet Pro M283fdw Multifunction Printer - Manual (Page 36)

Envelope orientation
Table 2-3 Envelope orientation
Tray Envelope size How to load envelopes
Tray 1 Envelope #10, Envelope Monarch,
Envelope B5, Envelope C5, Envelope DL
Face up
Short, postage end leading into the printer
Tray 2 Envelope #10, Envelope Monarch,
Envelope B5, Envelope C5, Envelope DL
Face up
Short, postage end leading into the printer
24 Chapter 2 Paper trays ENWW