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Chapter 2: Hardware information
8. Internal audio connectors (4-pin CD_IN, AUX)
(optional)
These connectors allow you to receive stereo audio input from sound
sources such as a CD-ROM, TV tuner, or MPEG card.
Figure 2-32 Internal Audio Connectors
®
P4B-MX
P4B-MX Internal Audio Connectors
CD_IN
AUX
Right Audio Channel
Left Audio Channel
Ground
Ground
Right Audio Channel
Left Audio Channel
Ground
Ground
9. System management bus connector (6-pin SMB)
This connector allows you to connect System Management Bus
(SMBus) devices. Devices communicate with an SMBus host and/or
other SMBus devices using the SMBus interface. SMBus is a specific
implementation of an I
2
C bus, a multi-device bus that allows multiple
chips to connect to the same bus and enable each one to act as a
master by initiating data transfer.
®
P4B-MX
P4B-MX SMBus Connector
SMB
SMBCLK
Ground
SMBDATA
+5V
1
Figure 2-33 SMB Connector