A: 3.5mm headphone socket, audio output, can be connected to headphone audio, etc. B: RCA socket, PDIF audio output.
C: IR, used to receive remote control signals.
D: OUT4 button and signal indicator, used for signal switching and signal input signal display, from top to bottom, the first light on represents input 1, the second light on represents input 2, and the third light on represents input 3. When the fourth light is on, it means input 4.
E: OUT3 button and signal indicator, used for signal switching and signal input signal display, from top to bottom, the first light on represents input 1, the second light on represents input 2, and the third light on represents input 3. When the fourth light is on, it means input 4.
F: OUT2 button and signal indicator,used for signal switching and signal input signal display, from top to bottom, the first light on represents input 1, the second light on represents input 2, and the third light on represents input 3. When the fourth light is on, it means input 4.
G: OUT1 button and signal indicator, used for signal switching and signal input signal display, from top toH: Power switch.