Gigabyte GA-MA790X-UD3P User Manual page 31

18) COM (Serial Port Header, White)
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.
19) CI (Chassis Intrusion Header)
This motherboard provides a chassis detection feature that detects if the chassis cover has been
removed. This function requires a chassis with chassis intrusion detection design.
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9
10 2
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Pin No. Definition
1 NDCD -
2 NSIN
3 NSOUT
4 NDTR -
5 GND
6 NDSR -
7 NRTS -
8 NCTS -
9 NRI -
10 No Pin
Pin No. Definition
1 Signal
2 GND
Hardware Installation