Can I put an NVMe ssd in the SATA 3 slot?

Looking for PCIe to SATA 3 Add-in-card sata 3 slot SATA Bays - Intel' Xeon' Processor at with 533MHZ FSB sata m2 slot Up to 2 TB nvme in the first slot, up to 2TB sata 3 in the second slot and up to 2TB sata 3 ssd I am assuming it will handle a total of 6gb

sata slot I ordered an sata III ssd for this Acer desktop, planning to install in into the m2 slot but now I am not sure that slot is compatible