Dynex DX-SC71 User Manual page 5

A1 - Microphone In (Pink) 3.5mm Jack
A2 - Line In (Bright Blue) 3.5mm Jack
A3 - Front Out (Light Green) 3.5mm Jack
A4 - Side Surround OUT (Light Green) 3.5mm Jack
A5 - Center/Subwoofer OUT (Light Green) 3.5mm Jack
A6 - Back Surround OUT (Light Green) 3.5mm Jack
D1 - Optical digital output
D2 - Optical digital input
JP2 - Game Port
JP3 - Connect to the front box for SPDIF_IN (OUT)
JP4 - Connect to the front box for 8CH_OUT
JP5 - Connect to the front box for Mic (Line)_In
JP7 - Connect to the front box for slave card
J6 - Aux In
J3 - CD In (Sony)
J4 - Panasonic CD In
USER MANUAL 5