在计算机硬件领域，PCIe（PCI Express）扮演着至关重要的角色，它不仅为高性能硬件设备提供了数据传输的高速通道，还极大地增强了主板的扩展能力。如果你对硬件的性能发挥有更高的要求，或者需要更多扩展，那在选主板的时候一定要优先看看PCIe插槽的配置。

Last time, we looked over diffpairs, their basics, routing rules and the notorious tolerances of PCIe when it comes to diffpairs. Now, let’s take a look at the exact signals that make PCIe tick, as ...