Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot?

Chipset slots and Gen4 NVMe, am I really bottlenecked? nvme 4 0 in 3 0 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, nvme vs m2 slot 2 SATA type drives only You would need either a card that has 2 NVMe slots, or two seperate cards that each have an NVMe slot

nvme pcie 40 in 30 slot SuperSpeed Storage：3*PCIe Connectors; EZ-Latch：PCIe x16 Slot with Quick Release Design; Fast Networks：Wi-Fi 6 & GbE LAN; Extended