Does any PCIe slot support NVMe SSD's automatically or do I need

The communication drivers and interface between NVMe and SATA are completely different as SATA uses AHCI drivers that are designed for hard disk drives

SATA-based, PCIe-based with NVMe support, or PCIe-based without NVMe support SSDs are all available An SSD with NVMe compatibility has up to five times

m24 slot wallet SATA SSD vs NVMe SSD · SATA SSD: smaller than SSD, slower than NVMe · NVMe SSD: very high write and read speeds

m2 pcie 40 in 30 slot What is the makemodel of your motherboard? Nothing wrong with a sata ssd either in format or format Most activity will be small