| 摘要 |
A computer motherboard includes an expansion slot that complies with a Peripheral Component Interconnect Express (PCIEx1 and PCIEx4) specification and an Advance Digital Display 2 lane-reversed (ADD2-R) specification, and that includes a set of conductive pins complying with the Peripheral Component Interconnects (PCI) specification. A riser card may be inserted removably into the expansion slot, and includes a first slot that complies with the PCIEx1 specification, and a second slot that complies with the PCI specification.
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