HP EliteBook 840 G3 - Manual (Page 76)

12 Specifications
Input power
The power information in this section may be helpful if you plan to travel internationally with the computer.
The computer operates on DC power, which can be supplied by an AC or a DC power source. The AC power
source must be rated at 100–240 V, 50–60 Hz. Although the computer can be powered from a standalone 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 this computer.
The computer can operate on DC power within the following specifications.
Input Power Rating
Operating voltage and current 19.5 V dc @ 2.31 A – 45 W
19.5 V dc @ 3.33 A – 65 W
NOTE: This product is designed for IT power systems in Norway with phase-to-phase voltage not exceeding
240 V rms.
NOTE: The computer operating voltage and current can be found on the system regulatory label.
Operating environment
Factor Metric U.S.
Temperature
Operating (writing to optical disc) 5°C to 35°C 41°F to 95°F
Nonoperating -20°C to 60°C -4°F to 140°F
Relative humidity (noncondensing)
Operating 10% to 90% 10% to 90%
Nonoperating 5% to 95% 5% to 95%
Maximum altitude (unpressurized)
Operating -15 m to 3,048 m -50 ft to 10,000 ft
Nonoperating -15 m to 12,192 m -50 ft to 40,000 ft
66 Chapter 12 Specifications