Installing and Replacing Desktop Board Components
47
IEEE 1394a Header
See Figure 20, I for the location of the IEEE 1394a header. Table 13 shows the pin
assignments for the header.
Table 13. IEEE 1394a Header Signal Names
Pin Signal Name Pin Signal Name
1 TPA1+ 2 TPA1-
3 Ground 4 Ground
5 TPA2+ 6 TPA2-
7 +12 V 8 +12 V
9 Key (no pin) 10 Ground
Connecting to the Audio System
After installing the IDT audio driver from the Intel Express Installer DVD-ROM, the
multi-channel audio feature can be enabled. Figure 21 shows the back panel audio
connectors.
Item Description
A Line In
B Line Out
C Mic In
Figure 21. Back Panel Audio Connectors
NOTE
The back panel line out connector is designed to power either headphones or amplified
speakers only. Poor audio quality may occur if passive (non-amplified) speakers are
connected to this output.
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