Dell Inspiron 660 (Early 2012) - Manual (Page 5)

Computer environment
Temperature range
Operating 10 °C to 35 °C (50 °F to 95 °F)
Storage –40 °C to 65 °C (–40 °F to 149 °F)
Relative humidity (maximum) 20% to 80% (noncondensing)
Maximum vibration (using a random vibration spectrum that simulates user
environment)
Operating 0.25 GRMS
Storage 2.20 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 40 G for 2 ms with a change in velocity of
20 in/s (51 cm/s)
Storage 50 G for 26 ms with a change in velocity of 320
in/s (813 cm/s)
Altitude (maximum)
Operating –15.20 m to 3048 m (–50 ft to 10,000 ft)
Storage –15.20 m to 10,668 m (–50 ft to 35,000 ft)
Airborne contaminant level G2 or lower as defined by ISA-S71.04-1985