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

is a slot that can interface with SATA , PCI Express

2 Slot do I use Motherboard manual says following -For 3rd gen AMD Ryzen Processors, the _1 supports PCIe x4 and SATA modes M key design and type

m2 sata slot Read our full Lexar Play 2230 1TB SSD review The best SSD for PS5 SILICON POWER XS70 2TB NVME SSD on a motherboard

m2 slot types An slot is a type of connector found on some motherboards that is used to connect devices, such as solid-state drives