Will PCI-E x1 card fit in a PCI-e x16 slot?

PCIe is backwards compatible so you can use a PCIe Gen 2 or 3 in a PCIe Gen 1 or whatever combination with little issue The biggest problem you

Have you ever thought if you can plug PCI Express cards into x16 lane slot? In this video

111 slot * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot 1 x PCI Express

101 slot Tudo o que você precisa saber PCI Express: velocidades, conectores, lanes de x1 a x16 e as diferenças entre as versões, do PCIe ao PCie