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Mitsubishi Electric PH440 User Manual: Electrical; Power Requirements

Pentium ii processor-based nlx profile motherboard.
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P H 4 4 0 N L X M o t h e r b o a r d U s e r G u i d e
6

ELECTRICAL

POWER REQUIREMENTS

The motherboard power requirements are heavily dependent on system configuration and the
software being used. The table below can be used as a guide to the likely power supply
requirements. They are measured using a 400MHz Intel Pentium II
modules and 8MB video memory running stress test software designed to yield worst case
results. They should not, however, be regarded as maximum values.
Supply
Voltage
Tolerance
Maximum
Current (in above
configuration)
Warning
Ensure that the system does not overload the +5V standby output of the power supply –
permanent damage to the motherboard may result.
This motherboard requires a +5V standby supply to operate correctly. This is normally
provided by an NLX-compatible power supply via the riser.
PCB
The PCB is a four-layer design measuring W9.0" x L11.2". It is NLX compatible. The inner
power planes are arranged so that the ground plane is nearest the top component layer.
The PCB has a UL flammability rating of 94V-0.
MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
+5V
+5V
standby
5%
5%
20mA
5A
S e p t e m b e r 1 9 9 8
®
Processor, 3 memory
+3.3V
+12V
3%
5%
3A
300mA
PAGE 39 OF 51
-12V
-5V
5%
5%
100mA
100mA

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