Onboard m2 slot or pcie m2 expantion card? which is faster?

Onboard m2 slot or pcie m2 expantion card? which is faster? pcie m2 slot When paired with the PCIe bus, an NVMe SSD offers the latest levels of performance and speed you can get NVMe SSDs communicate directly with the system CPU pcie 50 slot Similar to the slots, SATA SSDs are keyed at both M and B positions, so they can fit in SATA slots and PCIe , even if they

pcie 50 slot When paired with the PCIe bus, an NVMe SSD offers the latest levels of performance and speed you can get NVMe SSDs communicate directly with the system CPU

pcie4 slot Buy Xsentuals NVMe 8 GB Laptop Internal Solid State Drive ( SSD Full-speed PCIE To M2 Adapter NVMe SSD M2 PCIE X1 Riser PCI-E PCI Express M-key SSD Please refer to your motherboard documentation for details) Socket 3: SSD Drive Socket with SATA or up to four PCIe lanes Caution