PCIe x1 slot for network adapter card

Motherboards have 2 or 3 NVMe slots but Ryzen CPUs have total of 24 PCIe lanes

Gigabyte B650 AORUS ELITE AX ATX Motherboard For AMD Ryzen 70008000 Series CPUs - AMD B650 Chipset - 3x - PCIe - 1x Internal USB Header

pcie slot gpu Advanced Thermal Design & Thermal Guard：To Ensure VRM Power Stability & 25110 SSD Performance; EZ-Latch：PCIe x16 Slot with Quick Release Design

pcie 4 in pcie 3 slot PCIe buses can support 1x, 4x, 8x, and 16x lanes PCIe has an effective transfer speed of up to 985 MBs per lane which means there is a potential transfer