MSI RS482M2-IL/L - Manual (Page 80)

A-1
Using Audio Function
The mainboard is equipped with Realtek ALC658C chip, which provides support
for 6-channel audio output, including 2 Front, 2 Rear, 1 Center and 1 Subwoofer
channel. ALC658C allows the board to attach 4 or 6 speakers for better surround
sound effect. The section will tell you how to install and use the 2-/4-/6-channel
audio function on the board.
Appendix A: Using 2-, 4- & 6-Channel
Audio Function