HP mt20 User Guide - Page 72

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. The voltage and current for your computer is located on the regulatory label. Input Power Operating voltage and current Rating 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. Operating environment Factor Temperature Operating (writing to optical disc) Nonoperating Relative humidity (noncondensing) Operating Nonoperating Maximum altitude (unpressurized) Operating Nonoperating Metric 5°C to 35°C -20°C to 60°C 10% to 90% 5% to 95% -15 m to 3,048 m -15 m to 12,192 m U.S. 41°F to 95°F -4°F to 140°F 10% to 90% 5% to 95% -50 ft to 10,000 ft -50 ft to 40,000 ft 62 Chapter 12 Specifications