Serial Header; Connecting To The Audio System; Back Panel Audio Connectors; Serial Port Header - Intel BLKDH55TC Product Manual

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
1 DCD (Data Carrier Detect)
3 TXD# (Transmit Data)
5 Ground
7 RTS (Request To Send)
9 RI (Ring Indicator)

Connecting to the Audio System

After installing the Realtek audio driver from the Intel
the multi-channel audio feature can be enabled. Figure 24 shows the back panel audio
connectors. The default connector assignments are shown in the table.
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.
Installing and Replacing Desktop Board Components
Pin
2
4
6
8
10
Item Description
A Line in
B Line out (front speaker/headphones)
C Mic in
Figure 24. Back Panel Audio Connectors
Signal Name
RXD# (Receive Data)
DTR (Data Terminal Ready)
DSR (Data Set Ready)
CTS (Clear To Send)
Key (no pin)
®
Express Installer DVD-ROM,
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