Dell PowerEdge M420 Dell PowerEdge M620 Systems Owner's Manual - Page 70

Mezzanine Cards Mezzanine slots Two mezzanine PCIe x8 Gen 3 slots supporting dual-port Gb Ethernet, 10 Gb Ethernet, FC8 Fibre Channel, or Infiniband mezzanine cards Video Video type Video memory Matrox G200 integrated with iDRAC MB shared with iDRAC application memory 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. Standard Operating Temperature Expanded Operating Temperature Continuous operation: 10 °C to 35 °C at 10% to 80% relative 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). 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 < 1% 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). -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). 70