The Mac Pro First Generation is an Intel Xeon-based workstation computer manufactured by Apple Inc. between the years of 2006 and 2013.

259 Questions View all

What is the purpose of each of the PSU cables.

Hello everyone,

Im looking to do some modifications to my 2009 Mac Pro tower but in order to do so i need to know what all the PSU cables are.

Standard 24-PIN ATX PSU with the cable looks is this.

Description Wire color Pin number

+3.3 volts orange 1

+3.3 volts orange 2

ground black 3

+5 volts red 4

ground black 5

+5 volts red 6

ground black 7

PWR_OK gray 8

VSB +5 volts purple 9

+12 volts yellow 10

+12 volts yellow 11

+3.3 volts orange 12

--------------------------------

13 orange +3.3 volts

14 blue -12 volts

15 black ground

16 green PS_ON#

17 black ground

18 black ground

19 black ground

20 white -5 volts (optional)

21 red +5 volts

22 red +5 volts

23 red +5 volts

24 black ground

I need the equivalent for the 4,1 mac pro PSU.

If no one knows is there a way to test myself?

Thanks

- George

Answered! View the answer I have this problem too

Is this a good question?

Score 1
Add a comment

1 Answer

Chosen Solution

http://i.imgur.com/kvxMS.png

Was this answer helpful?

Score 2

Comments:

Way to go Greg!

by

Add a comment

Add your answer

George Banner will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 1

All Time: 101