Which slot should I use on an X570 gaming edge motherboard?

m2_1 slot   Dan golden princess slot

like title, It is a Mainboard full support NVMe, but M2_1 slot does not seem to be detecting NVMe gen 4, they work fine in the M2_2 slot

NVME Drive M2_2 slot performing slower than M2_1 slot My 2 Tb HP EX 950 is only getting ~2600 read 2600 write in my M2_2 slot Any ideas why In this demonstration, we will show you how to install SSD on the slot with the

mesin 777 slot 2 slots M2_1 slot Supports PCIe x4 1 Supports SATA 6Gbs Supports 2242 2260 2280 22110 storage I have a small Adata NVME SSD in the M2_1 slot which was installed by local computer shop on which the OS is loaded In addition I have an