PCI (Peripheral Component Interconnect) Express is a highly scalable interconnect technology that is the most widely adopted IO interface standard used in the computer and communication industry [2]. By providing scalable speed/width, extendable protocol capabilities, a common configuration/software model, and various mechanical form-factors, PCI Express supports a broad range of applications. It allows implementation of flexible connectivity between a processor/memory complex and an IO subsystems, including peripheral controllers, such as graphics, networking, storage, etc. PCI Express technology development is managed by PCI-SIG (PCI Special Interest Group), an industry association comprising of over 800 member companies.
PCI Express has his roots in Peripheral Component Interconnect (PCI), an open standard specification that was developed by the computing industry in 1992. PCI was.