SSPOLARIS NVMe SSD -- original to iMac 2019?

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SSPOLARIS NVMe SSD -- original to iMac 2019?

I found a 2TB SSPOLARIS NVMe SSD -- MZ-KKW2T00/0A6 -- I am unfamiliar with that brand.

Can anyone confirm this part shipped from Apple as an original BTO part in 2019 iMac 27 inch?

I checked my Apple 2017 1tb Flash SSD, and several Apple 2019 PCIe SSDs (32gb-1tb) -- they all list as Apple/Samsung NVMe L-series SSD in profiler.

I want to return one of my personal 2019 iMacs to original Apple parts...seller says the SSPOLARIS is original to 2019 5K iMac...

iMac 21.5″

Posted on Sep 13, 2025 1:16 PM

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Answer 1

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-g Author

Level 4

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Sep 13, 2025 2:29 PM in response to -g

did some more digging -- looks like MZ-KKW2T00 is what some of the 2019 iMacs shipped with -- also SSPOLARIS is a Samsung branded SSD

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Answer 2

-g Author

Level 4

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Sep 21, 2025 2:58 PM in response to -g

yep, looks like an original SSD

Profiler> System Settings> All Volumes IDs it as Solid State PCI-Express Drive (not Flash)

System Reports as APPLE SSD SM204BL

DriveDX reports as Apple/Samsung NVMe L-series SSD

Drive Health 100 percent, Power on Time 1,100 hours

(this is what you want to see in a healthy, lightly used SSD):

an original SSD back in a 2019:

iMac went back together, working as expected -- no more kernel:

"panic(cpu 0 caller 0xffffff80145f4c9a): nvme: "3rd party NVMe controller. Loss of MMIO space. Read. fBuiltIn=1 MODEL=WD_BLACK SN850X HS 2000GB FW=620361WD CSTS=0xffffffff US[1]=0x0 US[0]=0x5 VID=0x15b7 DID=0x5030 CRITICAL_WARNING=0x0.\n" @IONVMeController.cpp:5713"

that specific model WD_BLACK SN850X is causing that same error on 3 iMac 2019 i7 machines after updating them to 15.5.0 through 15.7.0 -- they ran fine on Sequoia prior to 15.5.0 -- a 27" 2019 runs the same WD flawlessly on Mojave...

[Edited by Moderator]

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