GIGA-BYTE TECHNOLOGY MDH11BM, User Manual

Page: 21 / 51

- 21 - Hardware Installation
9/10/11) COM2/COM3/COM4 (Serial Port Cable Connectors #2/#3/#4)
The COM header can provide one serial port via an optional COM port cable. For purchasing the
optional COM port cable, please contact the local dealer.
COM2
COM3
COM4
Pin No. Definition
1 NDCD-
2 NSIN
3 NSOUT-
4 NDTR-
5 GND
6 NDSR-
7 NRTS-
8 NCTS-
9 NRI-
10 NC
10 9
2 1
12) F_AUDIO (Front Panel Audio Header)
The front panel audio header supports Intel High Definition audio (HD) and AC'97 audio. You may connect
your chassis front panel audio module to this header. Make sure the wire assignments of the module
connector match the pin assignments of the motherboard header. Incorrect connection between the
module connector and the motherboard header will make the device unable to work or even damage it.
Pin No. Definition
1 MIC2_L
2 AGND
3 MIC2_R
4 FP_AUDIO_DET
5 LINE2_R
6 AGND
7 FAUDIO_JD
8 NC
9 LINE2_L
10 AGND
2 1
10 9