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HP Recommended
Z800
Microsoft Windows 7 (64-bit)

does the 508149-001 1100 watt replace the 508148-001 850 Watt? I noticed the 1100 watt PS has one extra pin on the P21 connector which I suspect provides another 12VDC  line  but The system work with the 850 watt PS before I plugged in the new 1100 watt PS.  Is a troublr shooting guide availablr=e for the main system board?  Thank you!!

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