Optimus IV Missing M.2 port

Hi, I've had my Optimus IV for over 2 years now and I've recently been doing some research on the vast number of M.2 PCIe variants (there are at least 4 different types and sizes that I know of) and wanted to install one in my laptop specifically 256gb 2242 M.2 PCIe x4

Having looked at the mobo specs there SHOULD be a M.2 socket free.

I work with a lot of HP notebooks and machines from 6 years ago have a free 2242 port (intended for use with 3G/LTE cards)

Having prised up my keyboard for only the 2nd time (the first time was to install another 4GB RAM) I discovered that the M.2 port is MISSING from my MOBO

Look at this pic from notebook check Clevo W350ET.jpg

My mobo doesn't have the connector despite having room and what looks like 2 holes where I assume screws go to hold the connector in place.

Can this connector be retro fitted onto my mobo? Would soldering be required as it looks like I can just install the connector and the circuit would be made by the pins making contact with the mobo. Appreciate your answers.
 
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