Technical Reference
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• Back and front panel host-powered USB devices (other than keyboard and mouse)
Load: continuous read/write activity on external drive/peripheral
• LAN linked at 1000 Mb/s
Load: continuous read/write benchmark on remote share
• All on board peripherals enabled (serial, parallel, audio, …)
Table 25. Maximum Load Configuration Current and Power Results
Output Voltage
3.3 V 5 V 12 V1 -12 V 5 VSB
Maximum Load
4.330 A 7.480 A 1.110 A 0.033 A 0.751 A
2.8 Reliability
The Mean Time Between Failures (MTBF) prediction is calculated using component and
subassembly random failure rates. The calculation is based on the Telcordia SR-332,
Method I Case 1 50% electrical stress, 55 ºC ambient. The MTBF prediction is used to
estimate repair rates and spare parts requirements.
The MTBF data was calculated from predicted data at 55 ºC. The Intel Desktop Board
D2500HN has an MTBF of at least 414,301 hours.
2.9 Environmental
Table 25 lists the environmental specifications for the board.
Table 26. Intel Desktop Board D2500HN Environmental Specifications
-20 °C to +70 °C
Operating
0 °C to +50 °C
50 g trapezoidal waveform
Velocity change of 170 inches/second²
Packaged Half sine 2 millisecond
Velocity change (inches/s²)
5 Hz to 20 Hz: 0.01 g² Hz sloping up to 0.02 g² Hz
20 Hz to 500 Hz: 0.02 g² Hz (flat)
10 Hz to 40 Hz: 0.015 g² Hz (flat)
40 Hz to 500 Hz: 0.015 g² Hz sloping down to 0.00015 g² Hz