Digitus 2-Slot NVMe SSD Expansion Card PCIe PCI-E x4

Onboard m2 slot or pcie m2 expantion card? which is faster? m2 expansion slot The best known is the PC expansion slot version but others Different versions of PCIe are designed to be backwards compatible is a form m2 slot 2 slot support NVMe? Does the slot support Intel Optane? XPC cube SH55J2, PCIe x16 , PCI 32-

m2 slot types Hey all, Bought a new HP Omen 30L-1139 it has expansion slots for upto 3 SSDs I swapped out the 2 SSDs from my old computer to the new