The PCI-8570 and PXI-8570 expand the capabilities of PCI by providing a high level of scalability and reliability to PCI based systems. Using StarGens StarFabric technology, the system extension sets provide a low latency, high throughput path to PCI slots in an expansion chassis. In addition, the single PCI-8570 (or PXI-8570) can extend to 2 PCI segments, resulting in the control of two PXI/CompactPCI chassis with a single controller, reducing costs significantly.