Gigabyte GA-H97TN User Manual page 22

24) COM1 (Serial Port Header)
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.
10 2
9 1
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Pin No. Definition
1 NDCD-
2 NDSR-
3 NSIN
4 NRTS-
5 NSOUT
6 NCTS-
7 NDTR-
8 NRI-
9 GND
10 No Pin