Out of Slots on motherboard What are my options?

the WiFiBluetooth slot is wired for PCI or USB and only 2 socket on the motherboard, which is already in use by the original

Acer ; Acer ENDURO Urban N3 , 1x 2280 NVMe slot ; Acer Extensa 2520, no slots ; Acer Nitro 16 , 2x 2280 PCIe NVMe x4

where are slot machines made Bought myself 2 NVMe M2 drives The Gigabyte motherboard has 3 slots available, marked M2A_CPU, M2B_SB and M2C_SB I guess M2A_CPU has

wheres the gold slot 2 Slot do I use Motherboard manual says following -For 3rd gen AMD Ryzen Processors, the _1 supports PCIe x4 and SATA modes M key design and type