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User’s Manual A-1
NB500/NB505/NB520/NB525/NB550D/NB555D Series
Appendix A
Chapter A
Specifications
This appendix summarizes the computer’s technical specifications.
Environmental Requirements
Power Requirements
Conditions Ambient temperature Relative humidity
Operating 5°C (41°F) to 35°C (95°F) 20% to 80%
(noncondensing)
Non-operating -20°C (-4°F) to 60°C (140°F) 10% to 90%
(noncondensing)
Wet-bulb temperature 26°C maximum
Conditions Altitude (from sea level)
Operating 0 to 3,000 meters
Non-operating 0 to 10,000 meters maximum
AC adaptor 100-240 volts AC
50 or 60 hertz (cycles per second)
Computer 19V DC