NVME M2 drives: which slot to use?

2 is a specification for internal expansion cards on PC mainboards and notebook computers was conceived as an successor of the mSATA interface and for the

PCIe SSDs 2 or 4 lanes) 1 x 67 pin key M slot 1 x 67 pin key B slot Interface: SATA PCIe Supports modules

m2 pcie slot NVMe: 1 Slot · SATA SSD: 1 Slot · Micro TF: Supports 32GB, 64GB, 128GB, 256GB

m2 nvme slot Happy new year you all! I'm experiencing a weird performance degradation of about 50% on slot 1 of my motherboard