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µPD720400 PCI Express BridgeThe µPD720400 PCI Express Bridge from NEC has one x8 PCI Express upstream port and two downstream PCI(X) bus segments. The x8 PCI Express upstream port can be also configured as x1, x2, and x4 lanes. Downstream buses can operate as 133MHz/64bits PCI-X bus or conventional PCI bus. With PCI Express, the user can achieve seamless connectivity with existing interfaces such as PCI-XTM and PCITM.
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µPD720401 PCI Express SwitchThe µPD720401 PCI Express Switch from NEC has two x8 PCI Express ports and four x4 PCI Express ports. Any port can be configured as either an upstream or a downstream port. For example, the switch IC can be configured as one x8 upstream port and one x8 plus four x4 downstream ports. As a result, the user can easily build various systems by increasing the number of PCI Express™ ports.
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