M vs : What's the Difference?

I'm upgrading one of the 1TB drives to a 2TB I will use the MSI Expander on my Creator X299 motherboard to install the new drive so I can

Usually either sacraficing SATA Ports or in some cases PCIE Slots for expansion cards That will show which slot affects what and what speed

pcie slot sizes Acer ; Acer Nitro 17 , 2x 2280 PCIe NVMe x4 ; Acer Nitro 5 , no slots ; Acer Nitro 5 , 2x 2280 PCIe NVMe ; Acer Nitro 5

pcie 8x slot Have you ever wondered what the small port near your primary PCIe slot was? 2 slot is usually filled by an SSD but can also be used for