Dell QHB owner manual Battery, Environmental

Battery

NVRAM backup battery CR 2032 3.0 V Lithium coin cell

Environmental

NOTE: For additional information about environmental measurements for specific system configurations, see dell.com/environmental_datasheets.

Storage Temperature	–40 °C to 65 °C (–40 °F to 149 °F) with a maximum
	temperature gradation of 20 °C per hour.
Standard Operating	Continuous operation: 10 °C to 35 °C at 10% to 80% relative
Temperature	humidity (RH), with 26 °C max dew point. De-rate maximum
	allowable dry bulb temperature at 1 °C per 300 m above
	900 m (1 °F per 550 ft).
Expanded Operating
Temperature
	NOTE: When operating in the expanded temperature
	range, system performance may be impacted.
	NOTE: When operating in the expanded temperature
	range, ambient temperature warnings may be reported
	on the LCD and in the System Event Log.
≤ 10% of annual operating hours	5 °C to 40 °C at 5% to 85% RH with 26 °C dew point.
	NOTE: Outside the standard operating temperature (10
	°C to 35 °C), the system can operate down to 5 °C or
	up to 40 °C for a maximum of 10% of its annual
	operating hours.
	For temperatures between 35 °C and 40 °C, de-rate
	maximum allowable dry bulb temperature by 1 °C per 175
	m above 950 m (1 °F per 319 ft).
≤ 1% of annual operating hours	–5 °C to 45 °C at 5% to 90% RH with 26 °C dew point.
	NOTE: Outside the standard operating temperature (10
	°C to 35 °C), the system can operate down to –5 °C or
	up to 45 °C for a maximum of 1% of its annual
	operating hours.
	For temperatures between 40 °C and 45 °C, de-rate
	maximum allowable dry bulb temperature by 1 °C per 125
	m above 950 m (1 °F per 228 ft).
Expanded Operating	Dual-processor configurations are not supported.
Temperature
Restrictions

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