A Brief Discussion on the Development Trends of USB Connectors

Limited I/O capabilities can severely bottleneck a computing device's performance. For years, the D-Sub Connector—in its 15 and 25-pin versions—provided a robust solution for sufficient data rates to peripherals. Originating from military applications, these robust connectors feature reliable pin-and-socket contacts and sturdy housing. Their subsequent adaptation into commercial versions, including the Solder Type D-Sub Connector and the Waterproof D-Sub Connector, made them a practical consumer standard, widely used in video and computer accessories.

As data demands surged from kilobits to megabits, and physical space for ports shrunk, a new interface was needed. This led to the introduction of USB in 1996. A major advantage of USB is its ability to simultaneously transmit both power and signals, enabling remote devices to operate without an external power source. Its hot-plug capability was another key feature.