An audio signal switcher includes a jack switcher and a plug switcher. The jack switcher includes an audio jack and a first USB port. The audio jack includes a left track segment and a right track segment which are coupled to a first data pin and a second data pin of the first USB port, respectively. The jack includes a ground segment divided into a left ground ring and a right ground ring which are connected together to couple to a ground pin of the USB port. The plug switcher includes an audio plug and a second USB port. The second USB port also includes a data pin, a second data pin, a power pin, and a ground pin. The audio plug also includes a left track segment, a right track segment, and a ground segment, which are isolated coupled to at least three pins of the second USB port.