Dell Alienware M18x R2 (Early 2012) - Manual (Page 7)

Power adapter
Temperature range
Operating
240 W 0°C to 40°C (32°F to 104°F)
330 W 10°C to 35°C (50°F to 95°F)
Storage –40°C to 70°C (–40°F to 158°F)
Connector types
DC connector 3-pin, 7.4 mm plug
AC connector 3-pin – C13
Computer environment
Temperature range
Operating 0°C to 35°C (32°F to 95°F)
Storage –40°C to 65°C (–40°F to 149°F)
Relative humidity (maximum)
Operating 10% to 90% (non-condensing)
Storage 10% to 95% (non-condensing)
Maximum vibration (using a random vibration spectrum that simulates user
environment)
Operating 0.66 GRMS
Storage 1.3 GRMS
Maximum shock (Measured with hard drive in operating status and a 2-ms half-
sine pulse for operating. Also measured with hard drive in head-parked position
and a 2-ms half-sine pluse for storage)
Operating 110 G
Storage 160 G
Altitude (maximum)
Operating –15.2 m to 3048 m (–50 ft to 10,000 ft)
Storage –15.2 m to 10,668 m (–50 ft to 35,000 ft)
Airborne contaminant
level G2 or lower as defined by ISA-S71.04-1985