PCIe vs NVMe: What's the difference?

1 x 67 pin key M slot 1 x 67 pin key B slot 2 SSD PCIe NVMe Key M 2280

I purchased a 4TB 2280 PCIe Gen4 NVMe SSD to add to an Inspiron 15 7567 as a storage drive The original hard drive was getting noisy

m2 slot mainboard On 12th gen motherboard, what happens if you plug a Gen 3 SSD into a Gen 4 Slot and

m2_1 slot 2 SSD The P300 is Patriot's next generation of mid-tier PCIe Gen3 x4 NVMe SSD to hit the market, offering 25% higher transfer speeds and IOPs