The VCU128 board 12V power input circuitry allows 12V to be applied through one of two connectors, J16 (typically used with the stand-alone VCU128 power adapter) or JP1, as shown in the following figure.
Figure 1. 12V Power Entry
Installation of the VCU128 board inside a computer chassis is required when developing or testing PCI Express® functionality. When the VCU128 board is used inside a computer chassis (i.e., plugged in to a PCIe slot), power is provided by choosing one of two mutually exclusive ATX power supply cables as described in this section (use one cable or the other).
- The ATX power supply 4-pin (1x4) peripheral connector, which requires using the ATX adapter cable (see the following figure) to connect to J16 on the VCU128 board. The Xilinx part number for this cable is 2600304. See ATX Power Supply Adapter Cable.
Figure 2. ATX Power Supply Adapter Cable
- The ATX supply 8-pin (2x4) PCIe power connector, which plugs into JP1 on the VCU128 board.