The RFC 1759 optional MIB groups supported by HP LaserJet printers are as follows:
5/5M/5N 5Si/5SiMX
ResponsiblePartyGroup Yes Yes
ExtendedInputGroup Yes Yes
InputMediaGroup No No
ExtendedOutputGroup No Yes
OutputDimensionsGroup No No
OutputFeaturesGroup No Yes
MarkerSuppliesGroup Yes Yes
MarkerColorantGroup No No
AlertTimeGroup No No
Bob Pentecost
HP