PCI-SIG has built its reputation on delivering high quality PCI Express^® (PCIe) specifications that have doubled bandwidth on average every three years, while maintaining full backwards compatibility with prior generations.

At PCI-SIG, we take pride in ensuring that our specifications operate without a hitch. However, sometimes PCI Express developers need to submit Engineering Change Requests (ECRs) to update parts of the specification so that PCIe integrated products can reach their optimal functionality.