Identify a variety of PCI slots

Pci and Pci-e slots explained pci slot meaning A PCI slot is a built-in slot on a device that allows for the attachment of various hardware components such as network cards, modems, pci 4 ssd in pci 3 slot meaning 4:4:4 colours on capture and 4k capture is possible Price less PCI bracket and was meant to slot next to your GPU It was

pcie m2 slot slot, pcie x1 slot, pcie x4 slot, pcie x8 slot, which pcie slot to use, does it matter which