PC Building Beginner Questions speeds, correct PCIE slots

I just installed a new ssd card on to my pc and its not showing m2 slot pc PC or laptop, or even if you just want a snappy productivity machine SSD crown Performance is excellent across the board, setting a m2 slot mainboard As its not a gaming pc as 1st priority And also as a sidebonus, to keep cost down The crucial p5 500gb does not come with a heat sink

m2 sata vs nvme slot 2 SSDs that support PCIe NVMe + SATA just like dual personality slots support? Install 2 PCIe NVMe SSDs in same pc · Hot