The XChange4000 is a versatile conduction- or air-cooled 6U VME64x dual PCI-X PrPMC carrier card. With PCI-X support between the two PrPMC slots and the VME64x 2eSST bridge, the XChange4000 is ideal for applications requiring the high bandwidth and flexibility that PrPMC modules offer. The XChange4000 includes a local +3.3 V power supply, so backplane +3.3 V is not required. When high-powered PrPMCs are required, the XChange4000 may be built up to use backplane 3.3 V power instead of the local supply.