iFixit - Answers With Device "Mac Pro"

Mac Pro Late 2013: Seal on inside of lid

Mon, 15 Dec 2025 20:04:29 -0700

I noticed that there is a type of seal running around the inside perimeter of the casing. So when the outer casing slides down onto the main unit, I assume this seal is either to create a cushion for the casing to sit on or its to seal one area of the main unit from another area. Anyway, last time I removed the outer casing, some of this seal was hanging off the casing and was quite brittle and several sections of it came off. Can this be replaced?

Mac Pro 2009-2012: How to change smc chip from 4,1 to a 5,1

Mon, 07 Oct 2024 11:16:05 -0700

how to physically

change smc chip from 4,1 to a 5,1

Mac Pro: Mac pro 3.1 no chime all fans run

Sun, 14 Jul 2024 21:56:23 -0700

Hi I have just recently acquired a mac pro 3.1 Model A1186 EMC2180 that wont start.

I have measured all voltages from the PSU which all appear to be fine.

Diag lights always show STBY and when the white light on front lights up will briefly flash GPU and then shows EFI.

I have removed both memory board, all hard drives and DVD drive, Graphics card and then removed all fans which did run, there also was a very small BT card which was removed Front panel USB disconnected as well as the FireWire port.

I have noticed when plugging in a K/B you can not press get caps lock or num lock lights to work however there is power on the ports confirmed by charging devices but wont charge an iphone.

When first plugging in to 230v the OT_A and OT_B quickly flash which is normal.

Any thoughts on what to do next

⟐ Edited by author July 14, 2024 at 21:56 MST

Mac Pro 2009-2012: will a 5,1Mac Pro Wi-Fi card work properly in a 4,1 Mac Pro

Thu, 11 Apr 2024 10:15:08 -0700

I am getting a 4,1 mac pro and I don't know much about it. I will most likely need a Wi-Fi card but I can only find ones for the 5,1 mac pro. will the 5,1 Wi-Fi card work in my 4,1 mac pro? It needs to work with a patched version of MacOS Mojave.

Mac Pro Late 2013: Please help to identifying the SMD components on 2013 Mac Pro A1481

Wed, 25 Oct 2023 18:36:43 -0700

Hi all,

I believes by an accident, I have ripped out the sensors from the logic board and now the fan run at full speed at all time. Searching the internet, I’ve found the reason why as an SMD component are missing from the board. Below is the SMD IC that is missing. Could someone help me to identify the IC so I can find a way to solder it back to the board? I use TG Pro to check on the sensors and found the Ambient 1 & Ambient Air Sensor are missing. Much appreciate if anyone can help to give me a hint.

⟐ Edited by author October 25, 2023 at 18:36 MST

Mac Pro 2009-2012: Can’t get macOS Catalina installed

Thu, 28 Sep 2023 10:15:57 -0700

I have a 2010 Mac PrO

After I install the Catalina patch it takes me to download the OS but it doesn't let me download it. Is there something else I can do?

I have High Sierra installed and I believe my video card supports it (I bought one with metal support)).

SO, I don't know if I should go first to Mojave and then go to Catalina or...? Thanks for the help/

⟐ Commented September 28, 2023 at 10:15 MST

Mac Pro Late 2013: Lost my iMessage when moving from Catalina to Monterey

Wed, 27 Sep 2023 16:53:30 -0700

I'm transitioning from my MacPro 5,1 running DosDudes Catalina (to many bugs), to my Mac Pro 6,1 running Monterey 12.7. But I've lost my iMessage Blue Messages icon(That I use everyday and now all I have is this green icon messages that I have used in the past to contact non-Apple people. I've lost all my people links and conversations. Tried drag and drop with the old App and it crashes on start up. I still get my Apple messages on my iPhone but I use my Mac much more than my phone. I'm not a happy camper, any advice?

Mac Pro 2009-2012: Wi-Fi Upgrade Card Apple # vs Standard

Fri, 15 Sep 2023 15:49:51 -0700

Trying to upgrade my Wi-Fi / Bluetooth board to put into my 2010 MacPro. Is Apple part # 653-0005 Wi-Fi from a late 2015 27' iMac A1419 the same as a BCM94360CD? Yes, I know I'll need the Mini PCI-E 52Pin interface adapter board.

Mac Pro 2009-2012: Mac Pro no signal anymore

Sun, 13 Aug 2023 04:52:06 -0700

I was watching a YouTube video when all of a sudden the computer shut down. Then I turned it back on and everything seemed normal, but suddenly the image disappeared: a black screen. Since then I can't get an image. I thought it was the graphics card, so I got another identical one, but that didn't help.
I ran the tests.

OVTMP CPU A -> ok
OVTMP CPU B -> ok
No RAM diode problem...

When I press the diagnostic button, the 5V diode lights up when the computer is switched off. When I press it again and start the computer, the following LEDs light up:

PSU
5v
EFI DONE
GPU OK

But the SYS.PG LED doesn't!

Do you have any idea what's wrong? Could it be the power supply?

I plug my iPhone in usb and it’s not charging , keyboard no light. I heard the hdd start and all the fans are ok.

Sincerely

Mac Pro 5.1 - 2* 2,66ghz - gtx 680 2gb mac Edition and asus flashed gtx 680 (I bought from eBay this week)

Mac Pro Late 2013: GPU Replacement Slot A (Compute) or Slot B (Render)? Lines on Display

Sat, 27 May 2023 03:06:20 -0700

Hi,

I have a Mac Pro A1481 2013 where one out of the two AMD Fire Pro D300 GPUs has failed. I'm looking to source a replacement but am unsure which to replace.

The machine powers on but shows lines on the display (see image attachments below).

Any suggestions / advice would be greatly appreciated.

Ben.

⟐ Edited by author May 27, 2023 at 3:06 MST

Mac Pro First Generation: Ambient Board compatibility in Mac Pros

Mon, 22 May 2023 10:42:19 -0700

A friend has an early 2008 Mac Pro 3,1 and the fans occasionally spin up to 100% and it locks up. I am trying to find out what is wrong with it. I reset the PRAM and afterward I could not repeat the fan issue. All diagnostic lights on the logic board look good. I ran the Apple Hardware Test on it and it passed the short test, but on the long test it detected the error 4SNS/1/40000000: TH0P-128.000

That code indicates a hard disk temperature sensor failure in hard drive bay 1. This Ambient Board is Apple # 922-8524, mfr # 820-2203-A (which I can also see embossed on the part). I purchased a replacement on eBay, but the seller sent me Apple part # 922-7732, mfr # 820-1974-A, which is for the 2006/2007 Mac Pro. The seller tells me it's the same part, but I don't want to put in an incompatible part. Does anyone know if these Ambient Boards (2006/2007 and 2008) are interchangeable?

⟐ Commented May 22, 2023 at 10:42 MST

Mac Pro Late 2013: Slow external enclosure NVME

Sat, 20 May 2023 04:42:38 -0700

Hello All,

I have this problem. A WD1TB NVME drive and two external enclosures. BAd,

slow transfer, every now and then "disk not ejected properly" message. Disk new, cases new. HArdware Test shows no errors. Another disk in an OWC enclosure works without problems. I tried with Monterey which is native and now with Ventura and same thing. Well I don't know what to do and I have run out of ideas. PRAM, SMC was reset. Very rarely the drive returns to normal speeds. On Blackmagic very slow testing .

Model Name: Mac Pro

Model Identifier: MacPro6.1

Processor Name: 10-Core Intel Xeon E5

Processor Speed: 3 GHz

Total Number of Cores: 10

Memory: 64 GB

Disk Utility is also very opry with this kit :(

⟐ Edited by author May 20, 2023 at 4:42 MST

Mac Pro 2009-2012: NVMe disk in PCIe - big write/read different

Sat, 29 Apr 2023 13:13:36 -0700

Hi guys,

today I finally got my PCIe x4 NVMe card for genuine Apple NVMe 12+16pin ( currently I have only 128GB). So I installed macOS Monterey 12.6.4 with OCLP. Everything is OK but the write/read speed look really odd to me. It's possible that the different is so big ?

Write 619.0 MB/s

Read 1435.3 MB/s

Thank you very much for any ideas/advice.

⟐ Commented April 29, 2023 at 13:13 MST

Mac Pro First Generation: It will turn on but no post on screen need help

Sat, 29 Apr 2023 09:40:51 -0700

I just bought this off Facebook marketplace he said it needs os but im not sure i have the disk for it but nothing works on the keyboard to open the disk drive im not sure what to do

⟐ Commented April 29, 2023 at 9:40 MST

Mac Pro First Generation: Screen powering on and then off

Tue, 22 Nov 2022 12:56:19 -0700

I got a mac pro 3.1 with no graphics card and no ssd(or hdd) i installed a nvidia gt 120 on it and i installed windows, it worked fine, but i wanted to try a mac os sistem so i installed OS X lion, in the installation the sreec kept powering on and off. Then i tryed installing OS X El Capitan, but unfortunately i still have the same problems

Mac Pro 2009-2012: Mac Pro blinks quickly only once

Sun, 13 Nov 2022 23:05:21 -0700

Hi, I have a Mac Pro 2012 and when I try to turn it on, the first 2 LEDs above start a red light, it blinks quickly only once when I try to turn it on.

⟐ Commented November 13, 2022 at 23:05 MST

Mac Pro First Generation: MacPro 3.1 doesn't start, but starts with a "Hack".

Thu, 20 Oct 2022 17:14:04 -0700

Yesterday I wanted to book up the old MacPro 3.1 (Early 2008) The last time it ran was about a month ago. It only serves as a video watching system by now.

Nevertheless, it didn't start. No main fans moving. The Graphics card fan moved.After about 0.5-1.5 seconds it turned off. I tried several times always the same.

I had only one problem with it during a cleanup once in the past, where it didn't start.I think it was a loose graphics card at the time, so I opened and cleaned him.Wasn't that dirty to be honest.

Still not working, a few searches and the usual suspect is the Power Supply Unit (PSU). I removed it and a visual inspection suggests it's fine. Capacitors and Coils look fine. Cleaned it, put it back together still nothing.

While reading about trouble shooting, I noticed a red blinking light. CPU A OT and CPU B OT.I tried the button next to it and the SYS_RES button as well. At some point I did hear the startup sound, so I plugged the monitor back in and still the same behaviour as above.

However, after several trials I figured out I can press the power on button several times and hold it. After 3-4 times, the two LEDs CPU A OT and CPU B OT will light up permanently. Once that happens the next time the MacPro starts fully functional, but with the fans on full blast. I didn't find this behaviour documented in the manual, but might have missed it.

Mac Pro Service Manual

I downloaded the hardware diagnostic tool (Link) and put it into

/System/Library/CoreServices/.diagnostics and ran it.

No warnings. The extended test ended as well with "No trouble found" It took 1.5h, so I think the PSU is fine. I'm now running the test again with full RAM installed, out of desperation.

Questions:

I don't know how to proceed now.I suspect it's some kind of error in the thermal sensors. They're plugged in correctly as far as I can tell. I didn't remove the CPU coolers as I don't have thermal paste. Is there a way to confirm one of the sensors are at fault. Also note they only are lid up after the "Hack", so maybe this is just a special mode?

⟐ Edited by author October 20, 2022 at 17:14 MST

Mac Pro 2019: I/O Grill Problem With GPU Upgrade

Fri, 16 Sep 2022 14:06:11 -0700

I am trying to upgrade my Mac Pro 2019 with a Radeon RX 6900 XT (it shows as a compatible card on the Apple site).

ISSUE: the card won’t fit with the I/O grill the way it is. (SEE PHOTOS)

QUESTION: am I missing something simple? I tried to remove the I/O grill, but I don’t see any tutorials for how to do that.

Thanks in advance!

Thanks so much! Here's what I found out...

I haven't upgraded a major component or built a computer in over a decade (and that was Windows!), so I was out of practice.

I learned that PowerColor manufactures larger encasements for their cards. I have a GIGABYTE RX 6900 XT on order with a small chassis. It should work, and I will post an update.

⟐ Commented September 16, 2022 at 14:06 MST

Mac Pro 2009-2012: My mouse only works on right click and no Dock

Thu, 15 Sep 2022 23:57:07 -0700

When I start up my Mac Pro, I can’t access the Dock, only my right click works on my mouse and I can’t click on any files. But I can access the files via right click and I can get the Dock to appear from the hide dock setting if I sleep the machine and then wake it. But even after that the problems persist with mouse and the apps on the dock will magnify but I can’t launch them unless I right click. Rigs been working fine for years, until two days ago. I cleared the NVRAM and rest the physical ram, problem’s still there…. Any thoughts?

⟐ Commented September 15, 2022 at 23:57 MST

Mac Pro 2009-2012: cursor can't select and I cannot 'Select All' with keyboard or cursor

Sun, 21 Aug 2022 14:09:46 -0700

my 2010 Mac pro running Mojave is having a problem where the cursor gets stuck on one item and then at the same time a sound constantly plays over and over again, its the sound you get when a task is completed. Also I can't select certain things in Finder windows and in photoshop.