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Appendix A
Specifications
This appendix summarizes the computer’s technical specifications.
Physical Dimensions
Physical Dimensions shown below do not include parts that extend beyond
the main body.
R850 379(w) x 252 (d) x 20.8~25.4 (h) millimeters (with 6 cell battery)
R840 341(w) x 239 (d) x 19.9~27.6 (h) millimeters (with 6 cell battery)
R830 316(w) x 227 (d) x 16.8~26.6 (h) millimeters (with 6 cell battery)
Environmental 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 -60 to 3,000 meters
Non-operating -60 to 10,000 meters
maximum
Power Requirements
AC adaptor 100-240 volts AC
50 or 60 hertz (cycles per second)
Computer 19V DC
R850/R840/R830
User's Manual A-1