Chapter 2: Installation
2-15
AC97
AC97 provides high quality onboard
audio. The H8DC8/H8DCi features
6-channel (5.1) sound for front L&R,
rear L&R, center and subwoofer
speakers. This feature is activated
with software included on the CD-
ROM that came with the serverboard.
Sound is output through the Line In,
Line Out and MIC jacks (see at right).
Activate AC97 with the JPAC jumper
(see next section for details) and the
BIOS setting for the Audio Codec
(under South Bridge Confi guration).
In addition, there are also CD1 and
AUX1 connectors on the board that
can be used for audio output.
Line Out (green port): Front L/R
MIC (pink port): Center/Subwoofer
Line In (blue port): Surround L/R
Audio Output Jumper/
Header
The J26 header is used both as a jump-
er and a cable header. Jump pins 5-6
and 9-10 to use the backpanel jacks
for AC97 audio output (see Figure 2-3).
J26 also gives you the option of direct-
ing the audio output to Line In/Line Out/
Mic jacks that may be added to the
front of the chassis (requires additional
hardware, not included). See the table
on the right for pin defi nitions.
Audio Output Jumper/Header
Pin Defi nitions (J26)
Pin# Defi nition
1
MIC
2
Ground
3
Reference voltage
4
5V (audio)
5
Line Out (right channel) from board
6
Line Out (right channel) to port
7
NC
8
Key
9
Line Out (left channel) from board
10
Line Out (left channel) to port
Notes:
NC indicates no connection. Pins 6
and 10 are not active when a header is used
for front side audio access.
Keylock Header
The keyboard lock header is designat-
ed JK1. Utilizing this header allows
you to inhibit any actions made on the
keyboard, effectively "locking" it.