Now tell me what you see in the 3 sections & what happens if you click on the arrow selector of each section
Now i want you to select the speaker icon next to your clock / if you do not have one there then you need to go into the control pannel & select (sounds & audio device ) Okay your sound having lots of static can be due to usb cable being interwined with your speakers / usb has the ability to penitrate into the speaker wires & distort the tranmission of sound pulses to the speakers / end result static #2 thru a cable that connects to the mobo So now s/pdif is an added componet that is way to send sound out of your system to another device & receive sound / it connects to your mobo in 2 forms directly