what is a pcie x1 slot good for?

What is PCIe? Understanding PCIe Slots, Cards and Lanes pcie 1x slot Convert PCIe x1 slot to open ended Is there a safe way to cut the closed edge? Unfortunately, most manufacturers currently produce only pcie slot size 1 x PCI Express x16 slot, running at x4 2 x PCI Express x1 slots 2 x PCI slots At the Moment there are 1 x RX480 and 1x R9 390 in use

pcie x1 in x16 slot Multi-Instance GPUs, Up to 7 MIGS @ 10GB each, Up to 7 MIGS @ 12GB each ; Form factor, SXM, PCIe dual-slot air-cooled ; Interconnect, NVLink: 900GBs PCIe Gen5: