motherboards had at least one PCIe slot for graphics. PCIe superseded PCI and PCI-X. Unlike its PCI predecessor, which used a shared bus, PCI Express is a switched architecture of up to 32 ...
When attached to a motherboard's PCIe x16 slot ... the +3.3V and +12V rails (3.3V x 3A + 12V x 5.5A). This is the maximum amount specified by the PCI Express standard for a x16 slot (PCIe 4.0 ...