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    The following figure shows the location and pinouts for the Universal Serial Bus (USB) connector on the NI PXIe-8133. Each controller has four USB ports on the front panel. The following table lists and describes the USB connector signals.

    Figure 1. USB Connector Location and Pinout
    Table 1. USB 2.0 Connector Signals
    Pin Signal Name Signal Description
    1 VCC Cable Power (+5 V)
    2 -Data USB Data -
    3 +Data USB Data +
    4 GND Ground