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3.4 AC’97/HD Audio Ports
Connected to your front I/O panel there is an Intel® standard 10-pin AC’97 connector
and an Intel® 10-pin HDA (High Definition Audio) connector. The pin assignments
for these connectors are as follows:
Pin Assignment for Audio Ports (HDA and AC’97)
You can connect either the AC’97 or the HDA connector, but not both at once, to
your motherboard depending on the spec of the motherboard. Locate the internal
audio connectors from your motherboard or sound card and connect the corresponding
audio cable. Consult your motherboard or sound card manual for the pin-out positions.
3.5 Power Switch / Reset Switch / Hard Disk Drive LED Connectors
Connected to the front of the Skeleton case Frame are LED and switch leads for
power, reset, and HDD LED activity. Attach these to the corresponding connectors
on your motherboard. Consult your motherboard manual for specific pin positions. For
LEDs, colored wires are positive (+). White or black wires are negative (–). If the LED
does not light up when the system is powered on, try reversing the connection. For
more info on connecting LEDs to your motherboard, see your motherboard manual.
Note: There is no Power LED in this case. The illuminated case fans will turn on when
there is power to the computer.
Pin Signal Names
(HDA)
Pin Signal Names
(AC’97)
1 MIC2 L 1 MIC In
2 AGND 2 GND
3 MIC2 R 3 MIC Power
4 AVCC 4 NC
5 FRO-R 5 Line Out (R)
6 MIC2_JD 6 Line Out (R)
7 F_IO_SEN 7 NC
8 Key (no pin) 8 Key (no pin)
9 FRO-L 9 Line Out (L)
10 LINE2_JD 10 Line Out (L)
1
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