Dell Inspiron 15-5565 Setup And Specifications page 18

Altitude (maximum)
* Measured using a random vibration spectrum that simulates user environment.
† Measured using a 2 ms half-sine pulse when the hard drive is in use.
‡ Measured using a 2 ms half-sine pulse when the hard-drive head is in parked position.
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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)