iFixit - Answers With Device "Mac Pro"

Mac Pro Late 2013: Diagnostics LED's meaning in a Mac Pro 2013

Tue, 10 Mar 2026 20:40:24 -0700

Does anyone know the meaning of the various diagnostics LED’s on the 2013 Mac Pro?

⟐ Commented March 10, 2026 at 20:40 MST

Mac Pro Late 2013: Mac Pro 6.1 RAM compatibility

Wed, 04 Mar 2026 07:29:32 -0700

Hello !

I want to update my Mac pro a little

now there is an opportunity to buy DDR3 2400 (as in the picture)

Can you please tell me if I can use such a memory? (factory memory has a lower frequency)

Here is the label

⟐ Answered March 04, 2026 at 7:29 MST

Mac Pro Late 2013: Can you upgrade the GPU?

Tue, 24 Feb 2026 12:32:06 -0700

I'm curious if you can upgrade the GPUs later on. I haven't been able to find any answers, but a lot of people asking.

⟐ Commented February 24, 2026 at 12:32 MST

Mac Pro First Generation: Where can I find an extra Tray/Sled?

Sat, 03 Jan 2026 05:29:40 -0700

I have an old (1.1) Mac Pro and I'm missing one of the sleds/trays. I can only find ones that will cost me 40 dollars. Can't find any on ebay either. Where can I buy one for the right price?

⟐ Commented January 03, 2026 at 5:29 MST

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: Mac Pro 2009 fans at full speed

Tue, 24 Feb 2026 06:18:01 -0700

My fans on my Mac Pro 2009 are running like crazy. Have already tried cpu replacement. I think it has something to do with the cpu tray. Help Pls!!!!

⟐ Answer edited February 24, 2026 at 6:18 MST

Mac Pro: booting from NVMe on MacPro 5,1

Fri, 28 Nov 2025 19:58:22 -0700

Note in OCLP General Settings:

"Requires Firmware support for OpenCore to load from NVMe"

Any information is appreciated -
Where do I find the firmware?
How is it loaded/flashed?

⟐ Answered November 28, 2025 at 19:58 MST

Mac Pro Late 2013: Fan - Mac Pro A1481 (Late 2013) pinout

Mon, 06 Oct 2025 12:24:23 -0700

Hello everyone,
This may be a strange question -
does anyone know what the connection for a 4-pin PWM cable for this fan looks like?
I would like to use it in my project, and it must be connected to a standard USB PWM controller.

Thank you in advance for your help and suggestions.

Regards,

Tom

I rushed to find a solution for the overheating MP6.1. I have the impression that OCLP, in combination with newer versions of OSX, which are more demanding in terms of system resources (RAM, CPU, etc.), cause older computers to work harder. I started looking for a solution and, using 3D and an additional original fan from the MP6.1, I achieved quite satisfactory results without the noise of an F-35 taking off. To improve airflow, I removed the original bottom cover, and the second fan is powered by a cheap 4-pin PWM controller. I soldered the cables into the fan's test pins and added a PVC mesh filter between the two original MP 6.1 fan diffusers.. At the moment, such a fan can be bought in the UK for £19, which is quite reasonable. If necessary, I also run TG pro on low settings so as not to drown out my thoughts :) I think that the whole thing doesn't look particularly awful and is quite compact compared to other designs 🤔

⟐ Commented October 06, 2025 at 12:24 MST

2023 Mac Pro: How can I extend the Bluetooth Antenna on a Mac Pro 2023?

Mon, 29 Sep 2025 12:21:50 -0700

Hello,

How can i extend the Bluetooth Antenna on a Mac Pro 2023?
The Mac Pro lives in a closet; so it has some difficulty to maintain connection to Bluetooth mouse / keyboard 5 meters away.
Opened up the Mac Pro 2023, but didn't find where the antenna is located / connected to the mainboard.
If i could find a connector for the Bluetooth antenna i might be able to try an aftermarket Bluetooth antenna.
Thank you, Peter

⟐ Commented September 29, 2025 at 12:21 MST

Mac Pro 2009-2012: PCI-e power cable for graphics card advice

Sat, 20 Sep 2025 09:34:20 -0700

Dear Community,

I managed to buy a 2009 Mac Pro 4,1 that was flashed to 5,1. It has a 6-core single CPU Xeon X5690. It will be a nice project computer for multiple use.

I was looking at Apple's archived topic regards which graphics card to use enabling metal support on Mojave.

I found a Sapphire 7590, a Quadro K5000, and an RX 580 too. For the start I only want a graphics card in the machine so I can boot it and began use it for basics.

I also found it hard to buy the pcie power cable. I know that it needs an 8 pin to double 6 pin cable as there are two 6 pin connectors on the mobo and the 8 pin that would go into the card.

My question would be towards the community is what place or website would you recommend to order the cable from?

Thank you for all your help and kindness!

⟐ Commented September 20, 2025 at 9:34 MST

Mac Pro 2019: iMac Pro SSDs don't work with Mac Pro 2019 error 4042

Fri, 19 Sep 2025 05:32:13 -0700

Hi guys, I bought a Mac Pro 2019 from a friend and here is the specs (16 core xeon, 128GB Apple OEM RAM and AMD Radeon Pro W5500X) BUT NO SSD.

I installed a matching pair of iMac Pro SSDs but it still gives the same error 4042 as if there is no SSD detected.

When conencted to power it's dead but it makes a very low click sound when disconnected and it does enters into DFU Mode, but when trying to restore it using Apple Configurator tool it stucks for 5 minutes or so then throw an error as shown below :

Lastly do you think buying a used Mac Pro 2019's SSD fix this issues ?

Thank you very much everyone

⟐ Commented September 19, 2025 at 5:32 MST

Mac Pro 2009-2012: Mac Pro Won't turn on

Tue, 16 Sep 2025 12:01:47 -0700

I heard the click but will turn on.

⟐ Commented September 16, 2025 at 12:01 MST

Mac Pro 2009-2012: Mac Pro 5,1 Powers On, No Video, Red Lights on Ram Board

Mon, 08 Sep 2025 10:02:20 -0700

Mac Pro 5,1 2012 running Mojave, Radeon Sapphire RX 580. Refused to wake from sleep morning after regular work day with no issues. Hard restart produced startup Chime, but no video signal. Checked power connections, disconnected external drives. Seems to boot up, machine and drives are visible/accessible on network from other devices. Checked with side panel off. RX 580 lights, fans spin up intermittently then stop. Two Red LEDS light on the Ram Riser.

Going to try takng the machine down, giving it a good clean, and reseating the PCIe cards ans RAM and see if that helps

But may have reached my technical limits. Any insights?

⟐ Answered September 08, 2025 at 10:02 MST

Mac Pro Late 2013: PFM006 & PPN001 error in diagnostics

Mon, 25 Aug 2025 10:08:52 -0700

I have an MacPro6,1, the 2013 year model which has the kernel_task going to 900% and fans at full speed. I’ve run the diagnostics tool and it came up with the following two errors:

• PFM006 - There may be an issue with the System Management Controller (SMC)

• PPM001 - There may be an issue with the power management system

The mac powers on fine, but is extremely slow. The SSD is cleared so no software is installed, running from Big Sur from an USB is also really slow.

I’ve opened up the machine and there was a lot of dust. Cleaned out a lot and have put it back together. No change. The water indicators I’ve seen on the boards are not red, hence there is no liquid damage from what I can see. Nor can I see anything weird on the open sides of the boards.

I’ve also done the SMC reset, didn’t help either.

I got the 6 core D500 model with 16gb ram. It also has some HDMI issues from time to time, having the screen flicker (like it’s not getting a propper connection); however using thunderbolt > HDMI works fine.

Does anybody know what I can do to resolve this issue? Do I need to replace the backpanel/PSU, or is there another issue which I can look at?

⟐ Answer edited August 25, 2025 at 10:08 MST

Mac Pro 2009-2012: Mac Pro 4,1>5,1 WI-FI Upgrade?

Sun, 20 Jul 2025 22:56:46 -0700

Hi,

I want to upgrade the WI-FI on My Mac Pro 4,1>>5,1

There’s a free PCIe slot if needed,

I would prefer if it was PCIe with external antennas.

Thanks!!! :-)

@hellomacos

⟐ Answered July 20, 2025 at 22:56 MST

Mac Pro 2009-2012: screen went green with black lines, using Pro Tools

Tue, 17 Jun 2025 16:13:43 -0700

My MacPro worked fine till today till the screen went green with black lines, using Pro Tools at the time. Shut it down, restarted started up fine, when I pressed play in Pro Tools it happened again, green screen. I shut it down again and when I tried to restart, it wouldn't, the chimes just kept repeating, like a broken record. Have let it rest for the night and I will tackle it again tomorrow. Any ideas or advice. Cheers.

⟐ Answered June 17, 2025 at 16:13 MST

Mac Pro Late 2013: Mac Pro 6,1 is constantly restarting

Tue, 03 Jun 2025 09:30:26 -0700

Hi everyone,

I recently purchased a used 2013 Mac Pro as I've always wanted one, but have since run into some issues. I'm running on the latest version of Monterey, have the 12-Core CPU (original), and it's been upgraded to a 512GB NVME with adapter, along with 64GB of Crucial RAM.

During light to normal use (I'm not what you'd describe as a "Pro" user - the heaviest task i'll do in any given day is editing RAW images in Lightroom) - The computer is just constantly restarting and rebooting to a message saying that it restarted due to an error (shared at the bottom of my post)

Here’s what I’ve tried so far:

SMC reset
PRAM reset
Erased and clean-installed macOS Monterey
Swapped in an original Apple SSD from a Macbook Pro 2015
Brought it to an Apple Store (in Paris), where a RAM-related issue was suspected but no further diagnostic given.
Tried multiple RAM combinations in different slots
Installed new RAM from OWC
Ran extended memory tests overnight (no issues reported)
Used EtreCheck (no major flags)
Ran CPU stress tests (Endurance, Cinebench, Heaven, etc. – all completed without crashing)
Reapplied thermal paste and thoroughly cleaned the machine internally.....

Here is the error report - I've ordered a new CPU and will install it once it arrives as my research as shown that this is the culprit but has anyone else had this same situation and fixed it?

Thank you!!!

---------

"Machine-check capabilities: 0x0000000001000c1d

family: 6 model: 62 stepping: 4 microcode: 1070

signature: 0x306e4

Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz

29 error-reporting banks

Processor 0: IA32_MCG_STATUS: 0x0000000000000005