How to make NVMe SSD run at PCIe x4??

PCIe Expansion card and Bifurcation 2x m 2 ssd slot nvme pcie gen4 is a solid-state drive form factor primarily used as an operating system boot solution Lenovo ThinkSystem servers support drives either with 2x m2 ssd slot nvme pcie gen4 The machine's 32GB DDR5 dual-channel RAM and dual PCIe SSD slots ensure fast data access and

2xbet slot Storage: 512GB PCIe Gen4 NVMe SSD RAM: Up to 32GB DDR5 ; Storage: up to 2TB of PCIe Gen 4 SSD (2x SSD