Aksavi

Quote people or tag them if you want them to respond to you. What exactly is the problem? Here is a quote from that article you linked : So, let’s start with the storage – there is one obvious M.2 NVMe-enabled drive. However, just beneath it, there is a SATA connector on the motherboard that is used to connect a 2.5″ drive (you can see the mounting points to the left of the M.2 SSD).
Those mounting points are clearly visible in the photos.
 

Yes. You remove nvme drive, plug sata connector, screw nvme back in, then plug the other end of sata connector into the 2,5' drive then mount the drive to the mounting points with screws and you are done. You might need an adapter to screw that hdd in.Jei angliškai neaišku, numesk PM, paaiškinsiu lietuviškai.