SMC Networks P4B-E Figure 2-43Internal Audio Connectors, Figure 2-44Internal Microphone Connector, 10.Internal microphone connector (3-pinINT_MIC) (on audio models only)

9.Internal audio connectors (4-pin CD, AUX, MODEM) (on audio models only)

These connectors allow you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card. The MODEM connector allows the onboard audio to interface with a voice modem card with a similar connector. It also allows the sharing of mono_in (such as a phone) and a mono_out (such as a speaker) between the audio and a voice modem card.

	AUX (White) CD (Black)
	Right Audio Channel
	Ground
	Ground
	Left Audio Channel
P4B-E
	MODEM	Modem-Out
		Ground
		Ground
		Modem-In

P4B-E Internal Audio Connectors

Figure 2-43 Internal Audio Connectors10.Internal microphone connector (3-pin INT_MIC) (on audio models only)

This connector connects to an optional front panel audio module using a 3-pin audio cable. If your chassis has this audio module, you can connect a microphone to the front panel connector .

The front panel microphone may not work properly when there is another microphone connected to the Microphone (pink) jack on the rear panel. You may only use one microphone at a time.

P4B-E

INT_MIC

Ground

MIC Input

MIC Power

1 3

P4B-E Internal Microphone Connector

Figure 2-44 Internal Microphone Connector

2-32 Chapter 2: Hardware information