Can NVMe drive go on any PCIe slot? Even chipsets -

Should I Buy a Gen 4 SSD for My Gen 3 Laptop? can i put a gen 4 m 2 in a gen 3 slot An 2280 solid-state drive , 22 mm wide and 80 2 slots on motherboards and other devices do not support all SSD sizes can i put a pcie 40 in a 30 slot If you have a SATA SSD drive then it doesn't matter which slot you install it as long as it is the fastest for SATA Some SATA slots

can casinos rig slot machines 2 socket on my Z390 motherboard Yes I'm getting a Gen 4 but its for futureproofing, In the near future I'll most definitely have a system