Moving boot SSD from Gen3 slot to Gen 4 expansion card?

PCIe Gen 4 offers a massive upgrade over the traditional PCIe Gen 3 SSD The new standard almost doubled the transfer speeds as compared to

Eight NVMe SSD slots on a PCIe x16 card Silent operation Add your own ultra-fast SSDs for Mac, Windows, and Linux

can''t use the m2 ssd inserted in the expansion slot ps5 PCIe SSDs are twice as fast as PCIe SSDs But next-generation PCIe SSDs will double PCIe Gen 4 speeds

can you put pcie 1x in 16x slot What is the difference between Gen4 and Gen3? Why is there such a large price difference? PCIe Gen4 is the fourth generation of the PCI Express specification