Install M.2 SSD on HP Probook 450 G5

I wanted to upgrade my HP Probook 450 G5 in order to replace the original 1T0 Toshiba HDD provided on my 2XY36EA machine with an M.2 256G0 Samsung SSD.
I found few infos on the web on how to choose the SSD and install it, so I decided to share my experience...
If you succeed to install alternative M.2 SSD please post a message which can help other users.
Enjoy !

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