The USB port on this device doesn't let you connect to a computer/allow any input of a USB device. This port is simply a 5v power port that can power or charge devices. It was intended to power the Dayton Audio Wave-Link wireless audio system (per manual page 3)
Dayton Audio BSA-200 User Manual
File: 300-785-dayton-audio-bsa-200-user-manual(3).pdf
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