HP LaserJet P3005 Printer series - Manual (Page 79)

NOTE If all of the tray type settings are set to ANY, and if you do not select a specific tray
(source) in the printer driver, the device pulls media from the lowest tray. For example, if you
have an optional tray 3 installed, the device pulls media from that tray first. However, if the tray 1
size and type settings are set to ANY and if media is loaded in the tray, then the device prints
from tray 1 first. If tray 1 is closed, the device prints from the lowest tray.
ENWW Control print jobs 67