This standard establishes environmental performance criteria for Complex Set Top Boxes (CSTB) relating to reduction or elimination of environmentally sensitive materials@ materials selection@ design for end of life@ life-cycle extension@ energy conservation@ end-of-life management@ corporate performance@ packaging and accessories. Purpose This standard for Complex Set Top Boxes is part of the IEEE 1680? family of standards that provides a clear and consistent set of performance criteria for the design of electronic products@ and provides an opportunity to secure market recognition for efforts to reduce the environmental impact of electronic products. This Complex Set Top Box standard is intended to provide a tool for government@ institutional@ corporate@ and consumer purchasers. Service providers and product manufacturers may use this tool to earn recognition in these markets@ recognizing that certain criteria may not be applicable to all types of purchasers. The environmental performance criteria of this standard are intended to define a measure of environmental leadership in the design@ manufacture of Complex Set Top Boxes@ the delivery of specified services that are associated with the provision of the product@ and in associated corporate performance characteristics. This standard is defined with the intention that the criteria are technically feasible to achieve@ but that only products demonstrating the leading environmental performance currently available in the marketplace would meet them at the time of their adoption. As the environmental performance of products that are available in the marketplace improves@ it is intended that the criteria will be updated and revised to set a higher performance standard for leadership products. In the event that the content of this document conflicts with or is covered by an existing national standard@ the relevant national standard will take precedence.