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

ZEBRONICS H61-NVMe Micro-ATX Motherboard for LGA 1155 Socket, Supports Intel 2nd & 3rd Generation Processors, Slot, Audio, DDR3 1600 MHz, Ports (RJ45

This mobo has not a M2 slot so that a PCIe to M2 adapter is required Nevertheless note that:

nvme m2 slot Or all three ports will perform the same with a standard 2280 drive?? Planning on a 2 TB Samsung NVMe 980 Pro as my boot drive Link to

nvme slot vs m2 Buy ZEBRONICS ZEB-H81M2 with PCIE NVMe Slot Motherboard only for Rs 4999 from Only Genuine Products 30 Day Replacement Guarantee