CompactPCI-products designed for use in computer systems, created by professionals, which brought increased demands for reliability, long-term use and stability of supply of specific models of equipment for a long period of time (as opposed to market desktop computers, where frequent changes of nomenclature - common For which the stability of issue-specific models are not above). Leading manufacturers of standard CompactPCI, members of the Association of PICMG (such as MOTOROLA, DEC ..), have many years experience in the market OEM-manufacturers and system integrators have acquired considerable experience in building products, protected from early obsolescence. This is done very carefully selected electronic components and even, in many cases, the establishment of their stocks in warehouses of companies that provide production equipment for several years, even after discontinuance of the producers of its electronic components.