Relevant Part Number: OWCMAU3ENPRPCI
Please note that the SSDs which Apple supplied with some of its computers are not compatible with the OWC Envoy Pro (OWCMAU3ENPRPCI). They work only when installed in the Mac model(s) they were designed for.
Compatibility Issue
Apple NVMe SSDs (all models), and AHCI SSDs made by Samsung (models from 2015 or later), while physically compatible with the Envoy Pro (OWCMAU3ENPRPCI), are not supported.
To check if your Apple SSD is an NVMe-based drive (any brand), follow these steps:
- Hold down the Option key then access the Apple menu and choose 'System Information...'
- Select the 'NVMExpress' item and check to see if the top of the window shows an 'APPLE SSD.' If it does you have an PCIe NVMe drive, which will not work with this specific enclosure.
To check if your Apple SSD is an AHCI drive, follow these steps:
- Hold down the Option key then access the Apple menu and choose 'System Information...'
- Click the 'SATA/SATA Express' item, then check for the SSD Controller item at the top of the window. When you select it, additional information will appear; next to 'Description' item you will see 'AHCI Version....'
Depending on which brand of AHCI drive you have, and depending on when you purchased the Envoy Pro enclosure, your drive may be incompatible with the enclosure. Specifically, Toshiba AHCI drives that are paired with Envoy Pro PCIe enclosures from prior to January 1, 2018, may not work.
The only way to verify whether you have a Toshiba drive vs. another brand like Samsung, is to remove the drive and check to see if a manufacturer is listed on the drive itself. If the drive says 'Toshiba' on one or more of the chipsets or flash modules, there is a good chance the drive will not work with the Envoy Pro enclosure.