Settings
Wizard 7

When you connect your PC to PC speakers using analog cables you can
use between 2 and 7.1 channels of output.

If you have not already done so,connect your audio cables from your PC's
outputs to the inputs of your speakers now.

Choose the number of analog channels you have connected and click next
Stereo (2 channels, 1 stereo cable)
4.0 (4 channels,2 stereo cables)
5.1 (6 channels,3 stereo cables)
7.1 (8 channels, 4 stereo cables)