SSD PCIeNVMe 512 GB

It is a type of PCIe slot drives can use a SATA or NVMe interface SATA ones will have two notches and NVMe will have one

2 SSDs: SATA and NVMe SATA uses an older interface with one designed around hard drives while NVMe is designed for flash memory

m2 nvme slot NVMe SSD that I recommend 2VO7E1G vs SSD comparison

m2 slot types ASUSTOR FLASHSTOR 6 - 6x NVMe slots-image ASUSTOR FLASHSTOR 6