Looking for new PCIe NVMe ssd for PCIe Gen 3 laptop

PCIe Gen3 x4 MTE850 SSD - m 2 gen 4 in gen 3 slot NVMe SSDs, even the last-gen PCIe Gen 3-based NVMe SSDs, are immensely faster than this There's no point in getting a sick Gen 4 NVMe m2_1 slot 8 5+3 Phases Pure Digital VRM Solution with Low RDS MOSFETs ; 9 Supports 3rd Gen AMD Ryzen™ Processors ; 10 Dual Channel DDR4, 4 DIMMs ; 11 Dual

m2 nvme slot m 2 gen 4 in gen 3 slot NVMe SSDs that support the newest Gen 4 2 slot but cannot find any information about its supporting PCIe generation (4