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? can i use m 2 pcie 4 0 in 3 0 slot PCIe x4 slot with Lower impedance CONNECTIVITY Dual NVMe PCIe * Connectors candy clash slot With this AMPCOM NVMe SSD PCI-E X4 Adapter, you could add a NVME SSD on your motherboard without slot With the channel of PCI-E X4,

candy clash slot Hello all, Currently, I have a Z390 Godlike motherboard with a Samsung 970 Pro 1TB NVME SSD My current readwrite speed is 3500MB2700MB

candy crush slot demo And from my understanding Intel motherboards that have pcie slots are only what 2 exist? I assume because I'm not using the card on a PCI You can use these PCIe SSDs in PCIe systems, but they'll 2 SSDs can run hot under sustained use, so having the module