Mainboard KM51G-754
Audio Configuration
CD-ROM Audio-In Connector: JCDIN1
The CD-IN connector is used to attach an audio cable to audio devices such as CD-ROMs,
DVD-ROMs etc.
Pin
Assignment
1
Left channel input
2 Ground
3 Ground
1
JCDIN1
4
Right channel input
SPDIF OUT Connector: JSPDIF_OUT1
S/PDIF is a recent audio transfer file format, which provides high quality audio using optical fiber
and digital signals. This mainboard is capable to deliver audio output and receive audio input
through this connector. One way you would use this connector is by using an SPDIF bracket
(optional) and attaching its cord onto this JSPDIF_OUT1 connector. The RCA or TOS-Link
connector will be on the bracket and convenient you to output or input data into the SPDIF
devices.
Pin
Assignment
1 +5V
2 SPDIF
out
1
JSPDIFO1
3 Ground
Front Audio Connector: JFAUDIO1
If your case front panel has audio ports, you can connect them to the Front Audio Header of this
mainboard. First, you must remove the jumper caps on this header and then attach the cables
from the front panel to the pins on this header. You can use both the front audio panel and back
panel audio simultaneously. If you are not using front panel audio ports, leave the jumper caps
on the header pins (Note: pins 5&6, 9&10, 11&12, and 13&14) to avoid problems with the back
panel audio ports.
1
2
13
14
JFAUDIO1
Pin
Assignment
Pin
Assignment
1 Mic
in/center
2 Ground
3 Mic power/Bass
4
Audio power
5 Right line out/Speaker out right
6
Right line out/Speaker out right
7 Reserved
8 Key
9 Left line out/Speaker out left
10 Left line out/Speaker out left
11 Right line in/Rear speaker right
12 Right line in/Rear speaker right
13 Left line in/Rear speaker left
14 Left line in/Rear speaker left
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