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

2 Slot is from the Ryzen 7 5700G then it will only support PCIe Found this tech site that explains that a Motherboard can have both PCIe and slots:

The card physically has an X4 interface, so it could be plugged into an X4, X8, or X16 slot It can still physically only access 4 lanes (else

gengtoto slot Kann eine SSD überhaupt die volle Grenze von pcie Eine PCIe4 SSD läuft mit voller PCIe3-Geschwindigkeit in einem PCIe3-Slot

geng 680 slot 2 2280 form factor allows for a quick and easy upgrade for any computer with an NVMe slot Plus, with the download- able Western Digital® SSD Dashboard you can