The interface is correct -- but before buying, remove the base cover and verify  that the bracket and scre is present in the system.  These are needed to mount the drive and if the system came without an M.2 drive, they likely aren't present in the system and you'll need to purchase them from Dell.  
Hi guys, i need help to choose the right ssd module for this pc. I already bought a wrong nvme ssd ,  so i don't want to be wrong again. I saw many videos and i found this on amazon : [URL] is right for this pc????  
Dell Vostro 15 5568 SSD module??