Datavideo SE-500 Instruction Manual page 16

8. Audio Inputs: A RCA stereo for a line level auxiliary analog audio source, such
as a CD player or tape deck. If you are using more than two sources via an
external audio mixer, connect the audio mixer's line level output to this
unbalanced Audio input.
9. Audio Output: A RCA stereo line level analog audio output, carrying the signal
present at the output of the audio mixer section (see Controls and Operations, page 19).
10. Power: Switches the unit On / Off.
11. DC Input: connect the power supply that came with the SE-500, and only the power
supply that came with the SE-500, here, and plug the other end into an electrical
outlet, preferably on a surge suppressor for added protection.
15