PCI Express is a low-cost, highly scalable, serial I/O interconnect that retains full software compatibility with the existing PCI standard. PCI Express will serve as a general purpose I/O interconnect for a wide variety of future computing and communications platforms. The new serial bus technology is expected to allow PCI Express transmission rates to keep pace with processor and I/O advances through the next decade, if not longer. PCI Express will eventually replace PCI, PCI-X and AGP parallel buses. Systems requiring the additional performance and features provided by PCI Express, such as those requiring high-end graphics performance, were among the first to migrate. Many vendors, including ATTO Technology, Inc, are currently developing PCI Express products, such as host adapters.
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