Dell OptiPlex 390 (Mid 2011) - Manual (Page 87)

Environmental
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):
Operating 20% to 80% (non-condensing)
Storage 5% to 95% (non-condensing)
Maximum vibration:
Operating 0.26 GRMS
Storage 2.2 GRMS
Maximum shock:
Operating 40 G
Storage 105 G
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