The credit for the success of all serial technologies; Ethernet, Fiber Channel, SATA, SAS, and now PCI Express, goes to 8/10b encoder and 10/8b decoder scheme from IBM. The fundamentals of all serial technologies revolves around 8/10b encoder, 10/8b decoder, scrambler, descrambler and elasticity buffer. PCI Express is destined to drive the serial technology hard enough to make it cost-effective to get into other technologies/applications. What are these other application/areas? This paper will give some insight into these.