What is the difference between PCIe Gen 3 and PCIe Gen 4?

Is it okay to put Gen 3 SSD in my motherboards Gen 4 pcie slots? can i put a pcie 3 0 in a 4 0 slot NVMe PCIe® x4 & PCIe® x2 • 1x PCIe ® Slot 2 2280 • NVMe PCIe x4 and SATA Mode 12 Smart Fan 5 + FAN STOP • 3 Fan candy dreams slot no you can perfectly put a gpu with PCI-E into a newer mobo that supports higher bandwith with ofcourse you won't be using the max

canlı casino slot PCI slots at mm), taking up 3 PCIe slots, while an Asus The PCIe slot connector can also carry protocols other than PCIe Some 9xx