Gigabyte GA-IMB410TN - Page 18

14) COMC/COMD (Serial Port Headers)
(Note 1)
Each 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.
(Note 1) The connectors/jumpers are on the back of the motherboard.
(Note 2) Only the COMC header supports RS422/R485 devices.
COMC COMD
1 9
2 10
1 9
2 10
15) COMA_PW/COMB_PW/COMC_PW
(Note 1)
/COMD_PW
(Note 1)
( Serial Port Header Power Select Jumpers)
The power select jumpers are used to select serial port power.
1-2 Close: Set to 12V.
2-3 Close: Set to 5V. (Default)
1
1
COMA_PW/COMB_PW
COMC_PW
COMD_PW
1
1
Pin No. Denition
1 NDCD-
2 NDSR-
3 NSIN
4 NRTS-
5 NSOUT
6 NCTS-
7 NDTR-
8 +5V/+12V
9 GND
10
NC
RS232 devices:
Pin No. Denition
1 TX(B)
2 NC
3 TX(A)
4 NC
5 RX(A)
6 NC
7 RX(B)
8 +5V/+12V
9 GND
10
NC
RS422 devices
(Note 2)
:
Pin No. Denition
1 D-
2 NC
3 D+
4 NC
5 NC
6
NC
7 NC
8 +5V/+12V
9 GND
10 NC
RS485 devices
(Note 2)
:
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