HP LaserJet 9040mfp Guide De Mise En Route page 13

Location requirements for the product
A level area on the floor, preferably a hard
surface without carpet.
Space allowance around the product.
A well-ventilated room.
No exposure to direct sunlight or chemicals,
including ammonia-based cleaning solutions.
ENWW
Adequate power supply (For the 110 V model,
a dedicated 15 A circuit is recommended; for
the 220 V model, a dedicated 8 A circuit is
recommended)
A stable environment—no abrupt temperature
or humidity changes.
Relative humidity 20% to 80%.
Room temperature 10°C to 32.5°C (50°F to
91°F).
Installation checklist 11