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

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2 is a specification for internal expansion cards on PC motherboards and laptops 2 x 67 pin Key M slot 1 x USB Type-C™ female Supports

My SSD connected to my board but speedtest gives me 3Gbs If I buy pcie expansion card can it be faster than onboard slot? Onboard m2 slot or This #short video quickly describes how to determine which slot is the best slot on a

when did postcode lottery start 2 Slots Please install the solid-state drive into the slot as shown below Installing module For M2_1 5-Port SATA Gen3 6Gbps Non-RAID PCIe storage expansion card · View More Add to compare ECM27 1-slot NVMe and 2-slot SATA SSD to PCI-E x4 adapter Card