Looking for info on a small stand alone setup

65olds88

I came across a small stand alone setup that appears to be for a computer. A subwoofer/amp tower with two external speakers. The tower has only 3 plugins. Two for the speakers and one for the power source. No input for the feed. It seems as if this might be a wireless. Does that make any sense?? is it possible to bypass this or maybe find the missing link?? Any advice would be greatly apprieciated.