A:Answer Mine came with instructions, but there isn't much to it.
The control puck and the power cord permanently attached to the back of the subwoofer, with the tiny speakers also connecting there, via a 3.5mm stereo jack. I added a 3.55mm stereo male-female extension cable without ill effect beyond possible loudness reduction.
The control puck has the power switch, loudness control, bass level, source selector, and 3.5mm jacks for headphones and aux-in.