HP Color LaserJet 4730 Multifunction Printer series - Manual (Page 117)

Loading custom-sized media into Tray 2
To use custom media, you must change the size setting on the control panel to CUSTOM and set the
unit of measure, X dimension, and Y dimension. See
To configure a tray to match print job settings for
more information.
1. Slide open the tray from the MFP.
ENWW Configuring input trays 97