BIOS can't see M.2 SSD

I got my DIY laptop today and trying to install on a well working Toshiba M.2 NVMe SSD taken from my old XPS13 , Model is THNSN5256GPU7

The SSD fits perfectly, snaps-in, remains in 20° angle, then screwed down to the board. Mechanically everything looks fine!

But: UEFI or Windows installation doesn’t recognize any storage (except of the USB stick for the OS installation, of course)

Is there any other possible incompatibility?

Thanks for help