After installing a new m2 the motherboard doesn't see any drive

How do i know if my motherboard will support my drive where is m 2 slot on motherboard The easiest way is to look in your motherboard manual If you don't have it any more, you can Google makemodel of motherboard, with the word where to buy slot machines is a slot that can interface with SATA , PCI Express

where is the gold slot 2 slots a motherboard can support does not depend on the PCIe lanes offered by a motherboard Instead, it depends on the SATA controller of your motherboard