USB connectors are used with Universal Serial Bus (USB) standard ports. USB is an external bus standard that supports data transfer rates of 12 Mbps in its version 1.1 and 480Mbps in its version 2.0.

As [Jan-Erik] had already built a simple USB connected Digital-to-Analog Converter (DAC), he decided to make the high-end version of it. The prototype you see in the picture above is based on ...