MITSUBISHI ELECTRIC MOTHERBOARD DIVISION
PAGE 37 OF 47
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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 Processor, 2 memory
modules and an AGP video card running stress test software designed to yield worst case results.
They should not, however, be regarded as maximum values.
!4
567
4
567
58987
5:7
;:7
;67
Voltage
Tolerance
5%
5%
4%
5%
10%
10%
Maximum
Current (in above
configuration)
50mA
5A
1.3A
300mA
30mA
0mA
Note that these figures do not cover cards plugged into the slots.
Note: For PCI 2.2 & PC99 compliance the +3.3 Volt standby rail is derived from the +5V
standby output. Ensure the PSU used can supply the current required by the PCI cards when
operating in standby.
When operating this motherboard with a power supply that does not provide a +5V
standby output, the PL4 jumpers must be fitted.
Advisory
Mitsubishi has found that some power supplies generate damaging voltages on their main
outputs when their +5V standby output is over-loaded.
The PCB is a four-layer design measuring W7.8” x L9.6”. It is ATX 2.01 compliant. 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.
