HP Nc6400 Notebook Tour - Windows Vista - Page 24

2 Specifications Operating environment The operating environment information in the following table may be helpful if you plan to use or transport the computer in extreme environments. Factor Metric U.S. Temperature Operating (not writing to optical disc) 0˚C to 35˚C 32˚F to 95˚F Operating (writing to optical disc) Nonoperating Relative humidity (noncondensing) Operating 5˚C to 35˚C -20˚C to 60˚C 10% to 90% 41˚F to 95˚F -4˚F to 140˚F 10% to 90% Nonoperating Maximum altitude (unpressurized) Operating (14.7 to 10.1 psia*) 5% to 95% -15 m to 3,048 m 5% to 95% -50 ft to 10,000 ft Nonoperating (14.7 to 4.4 psia*) -15 m to 12,192 m *Pounds per square inch absolute (psia) is another unit of measurement for altitude. -50 ft to 40,000 ft Rated input power The power information in this section may be helpful if you plan to travel internationally with your computer. The computer operates on DC power, which can be supplied by an AC or a DC power source. Although the computer can be powered from a stand alone DC power source, it should be powered only with an AC adapter or a DC power source supplied and approved by HP for use with the computer. The computer is capable of accepting DC power within the following specifications. Input power Operating voltage Operating current Rating 18.5 V dc @ 3.5 A - 65 W; 19.0 V dc @ 4.74 A - 90W 3.5 A; or 4.9 A 20 Chapter 2 Specifications ENWW