Use the M2 slots that match your motherboard's specifications.
Use the M2 slots that match your motherboard's specifications.
I'm using a MSI MAG Z790 TOMAHAWK WIFI ATX LGA1700 board. My drives are a 1TB and a 2TB M.2 SSD, both at 4.0 GB/s. I was thinking of placing the 1TB in the first M.2 slot for my OS and programs. I found it hard to tell if the first slot is shared with a PCIe slot, but I didn't find clear info online. Maybe I should try putting the 1TB in bay 1 and the 2TB in bay 2 since I don’t plan to use the other two slots soon.