Compaq LaserJet 4610n manual Doing so can cause paper jams

CAUTION	Do not print cardstock, envelopes, or unsupported sizes of media from Tray 2. Print on these
	types of media only from Tray 1. Do not overfill the input tray or open it while it is in use.
	Doing so can cause paper jams.
	1. Remove the tray from the printer. Move the CUSTOM/STANDARD switch to the
	CUSTOM position.

2.Adjust the rear media-length guide by squeezing the guide adjustment latch and sliding the back of the tray to the length of the media being used.

3. Push down the media lift plate until it locks.

ENWW Configuring input trays 81