Is it okay to put Gen 3 SSD in my motherboards Gen 4 pcie slots?

Current motherboards have multiple slots Some of those slots share PCI lanes with the PCIe slots In the one you mentioned it appears that

Moin Zusammen, mein Board, ein GIGABYTE B550 AORUS Pro V2, bietet im Prinzip drei M2 Steckmöglichkeiten

m2_1 slot A PCIe slot, for example, features an 8 GTs transfer rate per lane, whereas a PCIe slot possesses a 16 GTs transfer rate per lane 2

m2 pcie slot As the subsequent iteration of Gen3, Gen4's data transfer rate is twice that of PCIe Gen 3, enabling PCIe Gen 4 devices to transfer data at a faster speed