Can Mid 2012 Macbook pro be upgraded using nvme ssd using an adapter I'm looking to upgrade the storage on a 2012 macbook pro, and moving to an ssd. I know that I could just get a 2.5 inch drive in the optical drive bay, but I would rather keep the optical drive.

Is there a way to use a nvme ssd in a mid 2012 macbook pro model? I know an adapter is needed, so what adapter works? Also, I've heard that certain brands of nvme ssds work, so some confirmation on that would be helpful.

I dont know if OS version matters, but it is is el captian version :10.11.3.
There are M.2 PCIe to SATA adaptors that you could use, but there are two problems: Firstly, you're not going to see the faster speed of the NVM RAM, because the SATA interface is the bottleneck, and won't go any faster than 6 Gbps.
Secondly, ensuring that the adaptor card and the new SSD module will all fit together inside your laptop: neither being too big, nor rattling around loose.

The simplest thing is to replace the existing mechanical hard drive with a 2.5" SATA SSD. This will slot in exactly in place of your old drive, and will cost less than an NVM RAM module.

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