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

Is it okay to put Gen 3 SSD in my motherboards Gen 4 pcie slots? pcie 3 0 in 4 0 slot Both PCIe and slots can be configured with x1, x2, x4, x8, and x16 lanes, but PCIe slots have a higher transfer rate per lane and pcie slot bracket NVMe drives are so much faster than SATA drives PCIe — the PCI Express standard current generation — has a maximum speed transfer of 985

pcie slot bracket YMTC 232-layer TLC Interface: PCIe x4 Seq read: 7,400 MBs slot 7,300 MBs sequential reads and 6,800 MBs writes puts it

pcie 40 gpu in 30 slot PCIe x16, 1 PCIe x16, 1 PCIe x1, 1 Key E for WiFi; Graphics Output Options: HDMI, DisplayPort, D-Sub; AMD CrossFireX™; CH HD Audio Yes, PCIe standards are thankfully backwards compatible, meaning that a PCIe device will work in a PCIe slot, but it will only be able to reach PCIe