Asus Xonar U7 Guide De Démarrage Rapide page 13

Connecting 4.1 channel speakers / power amplifier
No Item
1 Front (R) Out port
2 Front (L) Out port
3 Rear Surround Out
port
OR
1 2
Description
Connects to the front right input port of 4.1 channel
speakers.
Connects to the front left input port of 4.1 channel
speakers.
Connects to the rear surround input port of 4.1 channel
speakers.
ASUS Xonar U7 Quick Start Guide
Amplifier
3
1