Audio card integrated

Hello, I wanted to know the pattern of the sound card 4 + 4. There are 4-channel stereo recording, 2 for dvs turntable, 1 for master records and the other what is it? Then there are 4-channel playback, 1 for Serato master, 1 for cueing of Serato, the other two what they do?

Thanks, Claudio

If it says its a 4in/4out interface that means mono channels. So 2 stereo channels for dvs going into laptop, and 2 stereo channels for playback (1 master, 1 cue).

I checked today. The computer detects 4 stereo inputs … phono1, phono2, rec master and 1 free…

What is that free?