which m.2 slot to use

However, to use this type of SSD, you need a motherboard equipped with an M.2 slot. Most modern motherboards have one M.2 slot, while some have two.

Up to two drives, 2x M.2 SSD • M.2 2242 SSD up to 1TB • M.2 2280 SSD up to 1TB. Storage Slot. Two M.2 slots • One M.2 2242 PCIe® 4.0 x4 slot • One M.2 2280 ...

To use an M.2 SSD, make sure that your motherboard has an M.2 slot. The slot also depends on its type and functionality. An M.2 SSD can make use of either the PCIe standard interface or the SATA interface.