How to connect a PCIe NVMe SSD to a motherboard if I

Two NVMe SSD slots on a Low-profile PCIe Card Add Your Own SSDs Add up to 16TB of SSD Storage! Super High-speed Data Transfers

2 PCIe NVMe drives are 'M' keyed SATA ones, however, are 'B+M'

nvme m2 slot laptop slot to support NVMe A SATA only slot may not work I haven't tested or checked I wasn

nvme gen 4 in gen 3 slot In addition, the removable SSD tray design allows you to swap SSDs without unmounting the CP074-1 from the PCIe slot, making drive maintenance a more efficient