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Model A1419 / EMC 2806 / Late 2014 or Mid 2015. 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (ID iMac15,1); EMC 2834 late 2015 / 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 (iMac17,1) All with Retina 5K displays

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Is it possible to have NVMe only on iMac 27" late 2014?

I have iMac 15.1. I have 512GB SSD installed on SATA bus.

No NVMExpress devices reported.

I plan to get 2TB NVMe SSD from OWC and remove SSD.

Is it possible to have only NVMe drive?

The drive appearance in the OS:

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Answered! View the answer I have this problem too

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Let's gets some clarity on your current configuration. What is your current drive? Is it a SATA drive that replaced the original HDD? Or is it a PCIe/NVMe drive that Apple had installed from the factory.

Also what is the size of drive you are planing on putting in?

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I have only regular 512GB SSD instead of HDD. It appears as APPLE SSD SM0512F under SATA. It was installed by Apple during initial buying.

I plan to install 2 TB NVMe.

No NVMExpress devices reported.

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The model seems to have been listed as compatible on OWC website https://eshop.macsales.com/item/OWC/S3DA...

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I'm a bit confused! A SATA listing tells me you have a SATA HDD (unless you switched it out) The Apple SM0512 listing it telling me you have a blade SSD NVMe/PCIe 3.0 x4

So it sounds you may have two drives in your system. Did you buy your system used?

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@Dan, I added screenshot:

https://d3nevzfk7ii3be.cloudfront.net/ig...

NVMExpress tab says: This computer doesn’t contain any NVMExpress devices. If you installed NVMExpress devices, make sure they are connected properly and powered on.

When I bought iMac I ordered custom configuration with SSD. I actually bought the device through Apple web store and picked up later.

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OK I see the confusion! The Apple SSD is a PCIe/AHCI drive not a PCIe/NVMe. Thats why it’s listed under the SATA section! Hopefully this helps explain things.

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So to clarify your current SSD is using the PCIe connection, so you would need to take it out to make room for the PCIe/NVMe drive.

So to answer your question: Yes, you can swap out the SSD and run your system with the OWC SSD.

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