Can a PCI-e 1x saturate a 2 port gig-e card?

Plug & Play in any PC or mini PC with a PCIe slot; Extreme sound quality All x1-x16 lane PCI Express slots supported; Supported operating systems

5GTs or 500MBs 8GTs or 1GBs 16GTs or 2GBs The A PCIe x1 adapter can fit in an x1 or higher slot A larger card

pcie slot configuration gen1 gen2 gen3 24U The X570 TUF does not come with an X4 slot and I'm not sure if I'll be using the second PCIE X16 slot for something else I have lying

pcie 4 nvme in pcie 3 slot Are there any PCIe expansion cards available to add USB-C to a desktop PC? Both of my x16 slots are taken up by my GPU; I have four