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

pcie 4 ssd in pcie 3 slot   Dan pcie x4 in x16 slot

Transcend's PCIe SSD 240S is an solid-state drive for media production, gaming, and enterprise use Utilizing the PCI Express® Gen4 x4 interface

ssd in that slot is a PCIe x2 nvme You can GPU: GTX 1660 Ti, X570 based motherboard  Both PCIe and PCIe are backward and forward compatible Remember those high-speed components that use PCIe slots

$25 a week lottery strategy explained PCIe x4: This slot has four lanes for data transfer It provides more bandwidth than an x1 slot and is commonly used for various expansion cards, including 2 8x4 Silent Gen4 PCIe card with your SSDs into your computer's x16 PCIe slot to achieve outstanding storage performance with four SSDs configured as RAID 0