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Announced on October 16, 2014, identifiable by the model number A1347 and EMC 2840.

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Error VDH002 after replacing internal SSD

My internal drive was failing during a reinstall of the OS. I ended up replacing the SSD with an 500GB OWC Aura Pro X2 (OWCSP4P1T1MB05K). After getting the drive installed and booted I ran read/write test and was running over 700mb/sec for both. I ran diagnostics just to make sure everything is working okay and it came up with an error VDH002 "There may be an issue with a storage device." Is this just because it isn't the OEM drive or is there something else I need to be worried about? Thanks.

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I found this online. You may still be able to use it.

This phenomenon has to do with the design mechanism of the Mac itself.

The interface of Apple's original SSD is classified as either AHCI PCIe or NVMe PCIe.

For earlier Mac models, the original SSD only supported the AHCI PCIe interface whereas for later Mac models, both AHCI PCIe and NVMe PCIe interfaces are supported.

Therefore, if you use Apples's original NVMe PCIe SSD or NVMe's JDM products on earlier Mac models, a "VDH002" message will appear when you hold down the D key to conduct detection during startup.

Yet, this does not affect the normal use of your product. The issue is merely a result of Mac's design mechanism itself. If you wish to check the health status of your JDM products, you may download our JetDrive Toolbox for further examination from the website provided in the link below.

https://us.transcend-info.com/Support/So...

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