Contribute
Register

neilhart's Mac Pro Hack

neilhart

Moderator
Joined
May 25, 2010
Messages
2,728
Motherboard
ASRock Fatal1ty Z270 Gaming - ITX/ac
CPU
i7-7700T
Graphics
GTX960
Mac
  1. MacBook
  2. MacBook Pro
Mobile Phone
  1. iOS
guys one question if I may,

is the original apple power supply (mostly 980W) even applicable to the pc components? Is it even worth it? Its quiet expensive on ebay and other e-shops 250-350 dollars :-/

From my perspective it is not. The ATX power supply required by today's PC motherboards is the standard. The Apple power supply is not well documented and few (if any) have documented a successful conversion to PC ATX usage.

For a Mac Pro if you can lay your hands on the original sheet metal, I advise re-packaging an known good ATX PSU into that sheet metal.

neil
 
Joined
Aug 12, 2010
Messages
62
Motherboard
Audio DAW. GA-z77MX-D3H TH
CPU
i7-3770K
Graphics
GIGABYTE GTX 600
Mac
  1. MacBook Pro
  2. Mac Pro
Classic Mac
Mobile Phone
  1. Android
HI Neil

I'm finally getting a chance to start my first mac pro mod.

My only question is do you have a photo of the other end of the cable coming from the front panel header... ie from the power, +5v, +12v etc etc?

I would like to know what connectors are on the other end and where they have gone in your mb!
Sorry for such a newbie question!

Thanks
 

neilhart

Moderator
Joined
May 25, 2010
Messages
2,728
Motherboard
ASRock Fatal1ty Z270 Gaming - ITX/ac
CPU
i7-7700T
Graphics
GTX960
Mac
  1. MacBook
  2. MacBook Pro
Mobile Phone
  1. iOS
HI Neil

I'm finally getting a chance to start my first mac pro mod.

My only question is do you have a photo of the other end of the cable coming from the front panel header... ie from the power, +5v, +12v etc etc?

I would like to know what connectors are on the other end and where they have gone in your mb!
Sorry for such a newbie question!

Thanks

Well if you refer to post # 15 you will see that I have detailed the 8 pin header as follows...

The 8 pin connector (see photo) is pinned as

1 - 2 - 3 - 4
5 - 6 - 7 - 8

1 = MSG (green) connect to MB front panel pins - try adjacent pins to the power switch + pin
2 = PW+ (purple) connect to MB front panel pins - power switch +
3 = 5 VDC (red)
4 = 12 VDC (yellow)
5 = 5 VDC (red)
6 = 5 VDC (red)
7 = 3.3 VDC (orange) (I did not have an orange marker - shown as black in the photo)
8 = Grd (black)

Some illustrations found on the web use an alternate pin count orientation...

If you still have a question, please reference this pin out.

Good luck,
neil
 

neilhart

Moderator
Joined
May 25, 2010
Messages
2,728
Motherboard
ASRock Fatal1ty Z270 Gaming - ITX/ac
CPU
i7-7700T
Graphics
GTX960
Mac
  1. MacBook
  2. MacBook Pro
Mobile Phone
  1. iOS
Ah yes...

What do you guys use for a connector on the end... ie into the motherboard?
Single connectors?

Thanks

That is an excellent question. First of all, I am a pack rat. It really kills me to throw tech out to the trash. So I keep old harness and connectors from things that are salvage. Next I find that the Micro Center has a $7 US front panel wiring kit that I have purchased any number of times just to get pinned out two pin plugs. These I normally cut to the length needed and solder splice. And I use very small diameter heat shrink tubing.

And I have used my wire cutters to trim a two pin plug down to a one pin plug when one is needed.

However with the Mac Pro I ordered up pins and connector housings from Performance PC or equivalent supplier. I have also invested in a ratchet type pin crimper and several wire stripper tools. Most of my hacks have 24 pin power harnesses cut to length which is done by re-terminating one end of an existing harness using new pins and connector housing.

And I also invested in an ATX Power Supply tester device so that I can check my work prior to first power on.

On the Mac Pro, I had two nearly complete Apple harnesses to work with and took my time to take them apart and re-used all that I could. And I think that is how I came up with the 8 pin plug for the front panel (however it has been some time and I do not recall the specifics).


I hope this helps,
neil
 

JBG

Joined
Oct 5, 2012
Messages
67
Motherboard
GA-Z77N-no-working-Wifi
CPU
i5-3570k
Graphics
Intel HD Graphics 4000 512 MB
Mac
  1. iMac
  2. MacBook Pro
  3. Mac mini
Classic Mac
  1. Power Mac
Mobile Phone
  1. iOS
Hi Neilhart,

Very nice build man.... :clap:
Very pro too ... respect
And is that a new model macpro ? You lucky bast.. :silent:

My next cooler is that you use too ... I love big coolers, I even tried to use the big G5 cooler,
but that way to much work, and processor cooling must be GOOD and not fail in any way.

Nice work .. just can't find enough words for it... oh ... yes I can :mrgreen:
 

Stork

Admin
Staff member
Joined
Sep 21, 2010
Messages
13,671
Motherboard
Asus ProArt Z490 Creator
CPU
i5-10400
Graphics
RX 580
Mac
  1. MacBook Pro
  2. Mac mini
  3. Mac Pro
Classic Mac
  1. Power Mac
  2. PowerBook
Mobile Phone
  1. iOS
...The MB is on 1/2 inch tall standoffs so there is a decent space under it...
NeilHart, are these standoff's the standard size? Please provide me with a link as every place I look, they don't specify the length, just the threading. TIA.

(Hopefully, these just didn't come out of your parts bin; I asked because I don't have a parts bin, yet. eelhead is a bad influence on me, getting into install components into a Mac Pro case. :lol: )
 

neilhart

Moderator
Joined
May 25, 2010
Messages
2,728
Motherboard
ASRock Fatal1ty Z270 Gaming - ITX/ac
CPU
i7-7700T
Graphics
GTX960
Mac
  1. MacBook
  2. MacBook Pro
Mobile Phone
  1. iOS
NeilHart, are these standoff's the standard size? Please provide me with a link as every place I look, they don't specify the length, just the threading. TIA.

(Hopefully, these just didn't come out of your parts bin; I asked because I don't have a parts bin, yet. eelhead is a bad influence on me, getting into install components into a Mac Pro case. :lol: )

Stork - The standoffs that I used were selected from my parts bin which took some time. What I consider the standard PC motherboard mounting standoff is approximately 1/4 inch tall (actual measurements run from 0.251 to 0.256 inches) and have male 6-32 thread end and female fine pitch threads. I found a few that had 6-32 female threads. So I used one standard and one of the 6-32 female threaded ones, and used thread lock to secure the two. I then cut off the male end using my grinder. This is too much work.

Today I would go online to McMaster Carr (mcmaster.com) and select a female/female standoff from the many listed. For example: Zinc-Pltd Brass Female Threaded Hex Standoff 1/4" Hex, 1/2" Length, 6-32 Screw Size, is $0.61 US each.

A link to the page: http://www.mcmaster.com/#standard-threaded-standoffs/=lvhj6t


If you are located in the US this is the way to go.

I hope that this helps,
neil
 

Stork

Admin
Staff member
Joined
Sep 21, 2010
Messages
13,671
Motherboard
Asus ProArt Z490 Creator
CPU
i5-10400
Graphics
RX 580
Mac
  1. MacBook Pro
  2. Mac mini
  3. Mac Pro
Classic Mac
  1. Power Mac
  2. PowerBook
Mobile Phone
  1. iOS
A link to the page: http://www.mcmaster.com/#standard-threaded-standoffs/=lvhj6t


If you are located in the US this is the way to go.

I hope that this helps,
neil
Great! I do live in the US and will get them today. However, the ones I found for the 1/4" hex Zinc plated 1/2" long 6-32 threaded standoffs are $1.69 each, rather than the $0.61 you found.

Am I looking in the wrong place? (The web site is unusual in that you can't get a direct link to the subject item.)

Thank you for your research.
 
Top