wich SSD are compatible to upgrade in Mac Pro Late2013, processor 3,5 GHz 6 -core Intel Xeon E5 ?

Originally the only compatible one was a genuine Apple one because Apple use a proprietary connector.

Then OWC started making a compatible one by selling one with the same proprietary connector.

Now there is a lot more choice. You can now not only get a small adapter which converts standard M2 connectors to work with Apple's proprietary connector but Apple have kindly updated the firmware of the Mac Pro to also support the newer and faster nVME standard as well as the older AHCI standard.

The adapter in question is this one - https://www.amazon.com/Sintech-Adapter-Upgrade-2013-2016-2013-2015/dp/B07FYY3H5F/

You can then in theory use any standard M2 PCI SSD.

Note: Do not get a Samsung 970 Pro. Sadly people are reporting this model is causing the Mac Pro to crash. The 970 (non Pro) is fine as are other brands.

Grant Bennet-Alder wrote:

Thank you, John Lockwood!

I had never seen a direct statement of WHICH firmware update provided that ability!

I may have been slightly wrong. Apparently the first official release of the nVME firmware was with Mojave 10.14.1. However I believe a security update for High Sierra at around the same time may also have included it. Obviously that security update was for 10.13.6. You need firmware 140.0.0.0 for nVME support.

Thank you, John Lockwood!

I had never seen a direct statement of WHICH firmware update provided that ability!

nVME devices seem to require some of the firmware upgrades that are installed along with Mojave. If you are not there yet, restrict your shopping to ACHI devices, and read the ads at OWC very carefully, as at least one of theirs may be an nVME device as well.

If you have first upgraded to High Sierra 10.13.6 then you are safe to install an nVME drive. The firmware update was included in 10.13.6.