Where shall I install the PCIe card?

PCIe 16x into a 1x slot pcie x1 slot List of Motherboards with 3 PCI-Express x1 Slots: MSI PRO Z790-S WiFi, ASRock Z790 PG LIGHTNING, ASRock Z790 PG LightningD4, MSI PRO B660-A DDR4, pciex16 slot Yes any pcie xanything card will work in a x16 slot, i have a pcie x1 asus xonar stx in a 16x slot right now x4 and x8 cards will also work in

pcie 50 x16 slot NICs work well in x1 slots, especially the single-port 1G or dual-port 1G Quad-port 1G won't be able to fully saturate all 4 ports at the