Question about MSI Computers & Internet
Posted by Anonymous on
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Posted on Jan 02, 2017
I just bought a msi p7n sli platinum. my board is better than yours hahaha, j/k, all playing aside, I have the same problem with the 8pin power connection. A power supply rated v2.2 has the proper 8 pin connection, but 2.1 or lower doesn't, regardless, plugging in two 4 atx pin connectors wont work because you'll be taking 4pins away from the main 24 pin plug (even though my manual says 20 pins will work, it doesnt, they lied!!!). However, when I put the normal configuration of 24 then the 4 in place of the 8, it works fine. The only thing i would worry about is overclocking, thats when you need to be careful with your voltages, etc. Also, I read somewhere that the 8 pin is actually 2 four pins, each 4 pin is for each side of the cpu...
Posted on Aug 13, 2008
SOURCE: Sytem panel connectors LEDS
I have .pdf manual of many P5B-V depending on your series. If you want just the main build, go to
You should find the pin-out there.
If you need a specific series (ie. P5B-VM) I can e-mail you the specific document.
Posted on Mar 25, 2009
What are the 'extra' 4 wires, Cyprian?
They are 2 Yellow, 1 Red, and 1 Black.
Red = 5 Volt wire
Yellow = 12 Volt wire
Black = Ground wire
You have a bad Power Supply, with a weak voltage power rail.
There are 3;
A) 3.3 Volt power rail, (Orange wires are 3.3 Volt)
B) 5 Volt power rail
C) 12 Volt power rail
1) If ALL of the LED lights were on at once, they would use less than 1 Watt of power.
2) EACH fan uses 2 to 3 Watts of power.
3) A typical Processor can use 51 to 125 Watts of power. Just depends on what Processor it is.
MicroStar Intenational RS480M2 can use processors that take a LOT of Wattage,
With a weak voltage power rail you do not have enough power, to turn the Processor on, and keep it on.
Do you wish to test the Power Supply?
Or do you have a KNOWN to be good, Compatible power supply; that you can borrow for a test unit?
Post back in a Comment.
Posted on Nov 18, 2012
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