You would mount the 2.5' SATA SSD in the bracket. First, OWC offers a NEWER TECHNOLOGY ADAPTADRIVE 2.5' to 3.5' Drive Converter Bracket, which is shown below. There are probably other suppliers that offer similar items. To install a 2.5' SATA SSD, additional items will be required. Below is an image of the cable and hardware. For example, this website offers both the cable and hardware.

The above image was taken from this webpage.Ĭurrently, the SATA cable and 3.5' drive mounting hardware is available for purchase off the web in used (and perhaps new) condition. I do not see this cable or hardware in the image you posted. If you Mac does not have SATA drive, then there may not be a SATA cable and 3.5' drive mounting hardware included with your Mac. The PCIe drive is a SSD, which would be faster than a SATA SDD or HDD. Your model Mac can have a SATA drive and/or a PCIe drive installed. The yellow arrow in the image below points to the data connector where the SATA cable would plug into. The green arrows in the images below point to the power connector where the SATA cable would plug into. If the power and data connectors exists on the logic board, then the answer is yes. Is it still possible to upgrade with 2.5' SSD drive?

I would post directly from the video, but the video usage policy instructs not to. I good video showing the steps is given here. You need to remove the logical board to exchange the SSD. The red arrow in the image below points to the connector where the SSD would plug into. The PCIe SSD is located on the back side of the logic board above the USB and Thunderbolt ports.

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