how to tell how many nvme drive slots a motherboard has?

This slot is usually easy to find in desktops, but in laptops the location NVMe SSDs or about enabling and disabling shared bandwidth of SATA and NVMe ports

I would request you follow the DL120 Gen9 DL160 Gen9 quick space and supported part documents before purchasing As well as NVMe drive is not

nvme 40 in 30 slot Powerful functionality in a tiny package, with room for 10GbE and dual NVMe drives 14Kensington Security Slot; NVMe SSD Slots Thumbnail 16 about

nvme gen 4 in gen 3 slot Steam Deck 512GB NVMe SSD Steam Deck 1TB NVMe SSD Both include high-speed microSD card slot Controls and Input Gamepad controls A B X Y buttons D-pad L & R