Dell M820 owner manual Connectors Internal

Connectors

Internal

USB	Two 4-pin, USB 2.0-compliant
SD	Two internal SD cards dedicated for the
	hypervisor
Mezzanine Cards
Mezzanine slots	Four mezzanine PCIe x8 Gen 3 slots supporting
	dual-port Gb Ethernet, 10 Gb Ethernet, FC8 Fibre
	Channel, or Infiniband mezzanine cards
Video
Video type	Matrox G200 integrated with iDRAC
Video memory	8 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.

Storage temperature	–40 °C to 65 °C (–40 °F to 149 °F) with a maximum
	temperature gradation of 20 °C per hour.
Standard 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).
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.

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