This can have several causes:
-The SSD is not yet formatted.
Create a new simple volume in the file management and format it.

-If a Samsung NVME SSD is already installed, switch to the standard NVME controller because the Samsung driver only recognises Samsung SSDs.

If Windows 10 is already running, it is very likely that a different NVME driver is installed.
Go to the device manager under storage controller -> Samsung NVMe controller, right click, update driver -> search for driver software on the computer -> show list of available drivers -> select standard nvm express controller and restart, then the new SSD should be recognised.