Asus P4B-MX Motherboard DIY Troubleshooting Guide - Page 46

optional, Internal Audio Connectors, SMB Connector

Page 46 highlights

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. Left Audio Channel Ground Ground Right Audio Channel Ground Left Audio Channel Ground Right Audio Channel ® P4B-MX CD_IN AUX P4B-MX Internal Audio Connectors Figure 2-32 Internal Audio Connectors 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 I2C 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. SMBCLK Ground SMBDATA +5V SMB ® P4B-MX 1 P4B-MX SMBus Connector Figure 2-33 SMB Connector 2-26 Chapter 2: Hardware information

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2-26
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