THUNDERBOLT 4 TO THUNDERBOLT 2 ADAPTER

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Level 1

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THUNDERBOLT 4 TO THUNDERBOLT 2 ADAPTER

I just installed my new Mac Studio and all is well - and fast! Except for one thing. I do have an external drive using Thunderbolt 2. Even though Mac Studio is using Thunderbolt 4, it is recommended to purchased an adapter Thunderbolt 3 to Thunderbolt 2. It is supposed to work but it doesn't. My external hard disk does not appear on my desk. I checked in the Finder preferences and the external disk is checked so it should show up. The other issue is that when I plug it in it seems to interfere with my mouse. The mouse freezes in the first part of starting up the computer. I have to select the user using arrows. Afterward the system is on, the mouse works just fine. When I unplug the external disk the mouse works perfectly from the beginning. So will I have to wait for Apple to make a Thunderbolt 4 to 2 adapter?

Mac Studio, macOS 12.4

Posted on May 27, 2022 8:21 AM

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Answer 1

Otterburn Author

Level 1

5 points

May 28, 2022 8:51 AM in response to Grant Bennet-Alder

Yes it has its own power supply and yes it is with Thunderbolt 2

Here is the product: https://www.promiseworks.com/Pegasus2-M.asp

It worked perfectly with the Mac Pro Mac Pro (Late 2013) - Technical Specifications which had Thunderbolt 2 connections.

I don't know what to do!

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Answer 2

Ordaco

Level 1

8 points

Jun 7, 2022 8:10 AM in response to Grant Bennet-Alder

Yes, It is working but, it's not mounting. It is mounting fine in both my 2014 iMac and my 2014 MacBook Pro.

Thanks for all your input. I also run it on terminal and it appears there as well... but, once again, not mounting to the Mac Studio.

Thanks again.

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Answer 3

May 27, 2022 8:44 AM in response to Otterburn

what make&model drive enclosure?

is it REALLY ThunderBolt-2, or just USB pretending to be ThunderBolt?

Does it have the Thunderbolt symbol on its input port/cable?

Doe it have its own power supply? the Apple adapter does not provide POWER across the interface.

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Answer 4

Otterburn Author

Level 1

5 points

May 28, 2022 9:16 AM in response to Grant Bennet-Alder

Thanks Grant - I did download and installed the driver. It still does not work and the mouse freezes. I need to sign up as a guest to unfreeze it. When this is done I can log in as usual and the mouse keeps being OK. So it has some kind of incompatibility. It is probably too old and not supported anymore. Too bad. I will connect it with my macbook and copy/replace it with a compatible new drive.

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Answer 5

Otterburn Author

Level 1

5 points

May 28, 2022 11:36 AM in response to Otterburn

Besides the Thunderbolt 4 connection and the fact that it is a Mac Studio my only other hypothesis is that it does somehow interferes with Sophos software that I was not able to completely uninstall (or reinstall either). I am trying to get that issue resolved. It possibly could (maybe) have something to do with it.

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Answer 6

Otterburn Author

Level 1

5 points

May 28, 2022 12:12 PM in response to Grant Bennet-Alder

Agreed! That is why I tried to uninstall it. But it failed somehow. So now I have been told to reinstall it in order to be able to uninstall it again. But I cannot do either at this point! Maybe I should have uninstall it in my old Mac before using Migration assistant to transfer all my stuff on the new Mac Studio. But it's too late for that now. I am waiting for a reply from Sophos to complete this process.

Thank you Grant!

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Answer 7

Ordaco

Level 1

8 points

Jun 6, 2022 8:45 PM in response to Otterburn

Hello everyone. I seem to have a similar issue. I had been using a OWC drive. Raided as a 12tb. Worked perfectly with my iMac 5K (late 2014). Now, I just connected it to my brand new Mac Studio via a Apple Thunderbolt adapter ( from 2 to 3) and.... nada.

The drive appears as 4 partitions in Disk Utitlity but that's it. Kinda panicking. Do I need to buy a whole new drive? I need help.

Thank you for your time.

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Answer 8

Jun 7, 2022 7:20 AM in response to Ordaco

<< The drive appears as 4 partitions in Disk Utility >>

Then it is connected and working. Post a screen shot of what you see in Disk Utility, and consider posting the text from running Terminal:

diskutil list

.

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Answer 9

Jun 7, 2022 8:50 AM in response to Ordaco

I agree the drives are fine, and the enclosure is working.

But showing partitions controlled by UUID 86FA30DA-9202-96F1-871EC6486200 rather than Core Storage Volume or Group indicates the software to run those drive is not loaded on your Mac, or the software is not installed correctly, or the software is damaged.

What software did you use on what Mac to create those Volumes? You need to install or update it on your newer Mac as well.

For OWC drives, that might be SoftRAID software.

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Answer 10

May 28, 2022 12:04 PM in response to Otterburn

Sophos and similar third party virus scanners have no place on your already well-protected Macintosh computer.

Effective defenses against malware and ot… - Apple Community

.

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Answer 11

tbirdvet

Level 6

13,785 points

May 27, 2022 11:53 AM in response to Otterburn

Adapter will not support non powered drives.

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Answer 12

May 28, 2022 8:56 AM in response to Otterburn

Promise Pegasus requires a Driver, downloaded from their web site.

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Answer 13

May 28, 2022 9:21 AM in response to Otterburn

You may want to contact Promise to see if you unit is malfunctioning, or whether three are any additional options.

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Answer 14

Otterburn Author

Level 1

5 points

May 28, 2022 9:33 AM in response to Grant Bennet-Alder

Good suggestion thank you! I just sent an email to their support team. As I said it was functioning perfectly well few days ago with my old Mac Pro. We'll see what they say. Thanks again.

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Answer 15

Otterburn Author

Level 1

5 points

May 28, 2022 9:46 AM in response to Otterburn

P.S.: I just connected it to my MacBook using the same adapter and it works perfectly. The issue seems to be between Mac Studio and the drive - not the drive itself.

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THUNDERBOLT 4 TO THUNDERBOLT 2 ADAPTER

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