SATA SSD vs PCIe SSD - What's the difference?

2 slot on the OptiPlex 3050 supports only PCIe M Resolution The drive must use the PCIe bus instead of SATA when installing an SSD hard

Adapter – 3 Port – 1 x PCIe – 2 x SATA III – SSD PCIE Adapter – M2 SSD – PCI Express SSD

m2 nvme slot 2 slot for SSD So it means i can exand with a and not NVMe? HP Laptop 15-da1001 nx Core i7-8565u

m2 pcie slot is a formfactor It can be both SATA and NVMe With the use of a 960 normally disable 2 sata ports only the manual will