The first connection it described above, the audio out is straight
from the source to speaker even without turn on your PC, there are
two channels in stereo.
If your connection as second diagram illustrated above for
surround sound output, then your PC must be turned on to
keeping the multiple channels sound card activate for operation.
AV2 ports at front side on this unit are the optional connections for
you playing video programs on tap from VCR/Camcorder to your
PC monitor, also adapted for Game console input.
VCR
Composite Video Out From These Video Sources
Camcorder
PS 2
Game Console
•
Colored Red Jack - Audio right channel.
•
Colored White Jack - Audio left channel.
•
Colored Yellow Jack - Video channel.