MSI MS-6178 - Page 84

CHAPTER 2 HARDWARE INSTALLATION
2-25
2.20 Modem-In: J21
The connector is for Modem with internal voice connector.
Mono_Out is connected to the Modem Speaker Out connector.
Phone_In is connected to the Modem Microphone In connector.
Modem_In
Mono_Out
GND
Phone_In