Patent ID: 8777670

Claim:
A plug adapter having a first plug-side end and a second plug-side end, wherein the first plug-side end includes a first electrical interface having a first mechanical interface geometry and N 1 first inner conductor parts, where N 1 ≧3 with respective first plug-side ends of the first inner conductor parts arranged in one plane at corners of an N 1 -sided polygon or around a circular line, and at least one first outer conductor part, and the second plug-side end includes a second electrical interface having a second mechanical interface geometry and N 2 second inner conductor parts, where N 2 ≧3 with respective second plug-side ends of the second inner conductor parts arranged in one plane on a straight line, and at least one second outer conductor part, wherein the first and second mechanical interface geometries have different designs, wherein at least one said first inner conductor part and at least one of said second inner conductor part are integral with one another, the first electrical interface comprising said first outer conductor part having a circular or elliptical cross-section, and the second electrical interface comprising said second outer conductor part having a rectangular or polygonal in cross-section.