Which slot should I use for my SSD?

Which slot should I use for my SSD? m 2 nvme slot Happy new year you all! I'm experiencing a weird performance degradation of about 50% on slot 1 of my motherboard m2 slot pc Acer Aspire V Nitro , 1x 2280 SATA III ; Acer Aspire V Nitro , 1x 2280 PCIe NVMe ; Acer Aspire V15 , no slots

m2 slot pc 2 specification supports NVM Express as the logical device interface for M 2 slots on motherboards and other devices do not support all SSD sizes

m2 slot screw NVMe is a storage and transfer protocol specifically designed for high-performance, non-volatile storage media · is an SSD form factor that 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