Motherboard power connectors question

[dalpets]

Hi,

I have just purchased a Gigabyte 8IPE775 pro motherboard.

I want to use a power supply with a 24pin connector for this board.

The motherboard has 24pin and 12v (4pin) connectors.

As the manual for this board is unclear (for me), when I am using a 24pin PSU connector do I still need to connect the 4 pin connector on the board or is the latter connector only used if a a 20 pin psu connector was used in the 24pin board connector.

Thanks for any help

 

[imported_Phil]

I'm not 100% sure that the board requires the AUX 12v (4pin) connector as well as a 24-pin PSU connector, but I know that at work, all the Intel systems we ship that have 24-pin PSUs and motherboards have the 4pin connector used as well. AFAIK, Intel 915-based boards will flash a warning if you don't have both connected.

I'd say try it without- the worst that can happen is the board fails to POST. If you get any weird messages about low voltages or about needing the 4pin connector, then just plug it in You won't damage anything by not having it plugged in.

 

[dalpets]

I guess what I am asking (from a technical standpoint) are the extra 4 connections in a 24 pin PSU connector doing the same thing as the separate 12V 4pin connector or are they mutually exclusive.

P.S. The manual seems to be saying that the 4pin connection has to be made "to mainly supply the cpu" but its rather ambiguous English leaves doubt in my mind that they may be talking about its use with an optional 20 pin connector.

Thanks again.

 

[Fullmetal Chocobo]

That is strange that they don't have a pinout of the cables in the manual. But nonetheless, it is very good to see that you were RTFM... Pins 21-23 are +5V, and pin 24 is common (ground). On the 4 pin aux connector, 1 & 2 are ground (common), while 3 & 4 are +12V. So no, they are not the same thing.
{all as per Supermicro manuals}
Tas.