Installing and Replacing Desktop Board Components
51
Serial Header
Figure 23, I shows the location of the serial header. Table 13 shows the pin
assignments and signal names for the serial header.
Table 13. Serial Port Header
Pin Signal Name Pin Signal Name
1 DCD (Data Carrier Detect) 2 RXD# (Receive Data)
3 TXD# (Transmit Data) 4 DTR (Data Terminal Ready)
5 Ground 6 DSR (Data Set Ready)
7 RTS (Request To Send) 8 CTS (Clear To Send)
9 RI (Ring Indicator) 10 Key (no pin)
Connecting to the Audio System
After installing the Realtek audio driver from the Intel
®
Express Installer DVD-ROM,
the multi-channel audio feature can be enabled. Figure 24 shows the back panel audio
connectors. T
he default connector assignments are shown in the table.
Item Description
A Line in
B Line out (front speaker/headphones)
C Mic in
Figure 24. 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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