Asus Audio Card Xonar D2 - Manual (Page 26)

20 ASUS Xonar D2
5.2.2 Connecting 5.1 channel Headphones
1
2
3
No Item Description
1 Front Out Connect the front-channel 3.5mm plug of your 5.1
headphones into this jack.
2 Side Surround Out Connect the surround-channel 3.5mm plug of your 5.1
headphone into this jack.
3 Center/Subwoofer Out Connect the Center/Bass-channel 3.5mm plug of your 5.1
headphone into this jack.