Macbook Pro not recognizing ssd
Hi, so my MacBook pro (mid 2012) doesn’t recognize my ssd anymore. I can’t repair, verify or reinstall When booting in to disk utility. It so happens that my SO has the exact same macbook. So i swapped the ssds and lo and behold it boots like a charm in my SOs mac. So my question really is, what hardware in my mac could be causing this? I know the HD Cable, but is there anything Else?
MacBook Pro 13″, macOS 10.15