I want to upgrade to an SSD via the M.2 port so I can also utilize the already existing HDD. The model number is 15-CX0056WM. I noticed that the slot for it looked a little weird when I opened it up. The small grouping of pins on the port has four pins but I can only find SSDs with 5 or 6 pins on the smaller grouping and can’t find any SSD is that look like they match. Any ideas?