Some say connectors standardized the connector industry to produce great change can not be overemphasized. In the 80 's of the last century only a few organizations in standardized connectors, connector of the IEC in the international arena was the main standardization organizations. At the national level, the United States of EIA and United States military organization is the main cradle connector standards. At this time most of the standard connector main connector from the application perspective, as an/PCB circuit board connector, or the connector type, such as circular connectors (circular connector). Except these "official" of connection manager standardization organization, also some connection manager producer and Connection Manager user release connection manager products specifications, these specifications of content and no beyond connection manager standard of content, no connection manager standard of authoritative, but make connection manager standard to a more near connection manager products specifications of way appeared, is than connection manager standard update more timely. these standardization organization in developed connection manager standard of process often is long, this main because not only drafted standard needed time, More time consuming in approved and adopted by consensus, in particular adopted by consensus.