PCIe expansion slot definitions

It's a slot of x16 size but electrically x4

On the motherboard, PCIe lanes appear in x1, x2, x4, x8, and x16 variations More lanes mean more bandwidth, as well as a longer slot GPUs are usually

pcie slot qrelease PCIe slot description ; 1 PCI Express version Each PCIe version corresponds to a specific data transfer rate between the processor and peripheral devices

pcie x32 slot The meaning of EXPANSION SLOT is a socket on the motherboard PCIe expansion slots, four storage bays, and support for up to 450 W