Can You Help me Understand This SATA NVMe PCIe SSD Gen

Pcie - pcie gen 4 in gen 3 slot PCIe x4 x8 x16 Slot USB Type C · 1 out of 5 stars 50+ bought in HP EX900 Plus 256GB NVMe SSD pcie 30 x4 slot Gen4 drives often have betternewer hardware so will run better in a Gen3 slot than a native Gen3 drive in many if not most cases, but you

pcie 30 x1 slot PCIe: This interface taps into four of your computer's PCIe lanes to blow away SATA speeds, to the tune of nearly 4GBps over PCIe gen 3