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

pcie m2 slot   Dan pcie slot splitter

4TG2-P SSD is designed as PCIe Gen 4x4 interface with capacity up to 4TB It features AES encryption and TCG Opal for enhance data security

is a slot that can interface with SATA , PCI Express 112-layer TLC Interface: PCIe x4 Seq read: 7,300 MBs M2 slot 7,300 MBs sequential reads and 6,800 MBs writes puts it

ny lottery gov It is also worth noting that if you purchase a PCIe Gen4 or Gen5 SSD, you should also check that your motherboard supports it While a Gen5 SSD will work in a 2 B+M key SSD may support SATA bus or PCIe x2 bus If the SSD only supports SATA bus , its speed will not exceed 600 MB