Technical Guide

NOTE: The micro USB 2.0 compliant port can only be used as an iDRAC Direct or a management port.
NOTE: The USB 2.0 specifications provide a 5 V supply on a single wire to power connected USB devices. A unit load is
defined as 100 mA in USB 2.0, and 150 mA in USB 3.0. A device may draw a maximum of 5 unit loads (500 mA) from a port
in USB 2.0; 6 (900 mA) in USB 3.0.
NOTE: The USB 2.0 interface can provide power to low-power peripherals but must adhere to USB specification. An
external power source is required for higher-power peripherals to function, such as external CD/DVD Drives.
Environmental specifications
NOTE: For additional information about environmental certifications, refer to the Product Environmental Datasheet located
with the Manuals & Documents on www.dell.com/support/home.
Table 41. Operational climatic range category A2
Temperature Specifications
Allowable continuous operations
Temperature ranges for altitudes <= 900 m (<=
2953 ft)
10–35°C (50–95°F) with no direct sunlight on the equipment
Humidity percent ranges (non-condensing at all
times)
8% RH with -12°C minimum dew point to 80% RH with 21°C (69.8°F)
maximum dew point
Operational altitude de-rating Maximum temperature is reduced by 1°C/300 m (33.8°F/984 Ft) above
900 m (2953 Ft)
Table 42. Operational climatic range category A3
Temperature Specifications
Allowable continuous operations
Temperature ranges for altitudes <= 900 m (<=
2953 ft)
5–40°C (41–104°F) with no direct sunlight on the equipment
Humidity percent ranges (non-condensing at all
times)
8% RH with -12°C minimum dew point to 80% RH with 24°C (75.2°F)
maximum dew point
Operational altitude de-rating Maximum temperature is reduced by 1°C/175 m (1.8°F/574 Ft) above 900
m (2953 Ft)
Table 43. Operational climatic range category A4
Temperature Specifications
Allowable continuous operations
Temperature ranges for altitudes <= 900 m (<=
2953 ft)
5–45°C (41–113°F) with no direct sunlight on the equipment
Humidity percent ranges (non-condensing at all
times)
8% RH with -12°C minimum dew point to 80% RH with 24°C (75.2°F)
maximum dew point
Operational altitude de-rating Maximum temperature is reduced by 1°C/125 m (1.8°F/410 Ft) above 900
m (2953 Ft)
NOTE: Certain system hardware configurations may require operating temperatures to be less than 28°C. For more
information, see the Thermal air restrictions section.
Table 44. Shared requirements across all categories
Temperature Specifications
Allowable continuous operations
Appendix A. Additional specifications 55