Gigabyte GA-H170-Gaming 3, User Manual, Page: 20 / 44

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16) COMA (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.
Pin No. Definition Pin No. Definition
1 NDCD- 6 NDSR-
2 NSIN 7 NRTS-
3 NSOUT 8 NCTS-
4 NDTR- 9 NRI-
5 GND 10 No Pin
10
9
2
1
15) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports via an
optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.
Pin No. Definition Pin No. Definition
1 Power (5V) 6 USB DY+
2 Power (5V) 7 GND
3 USB DX- 8 GND
4 USB DY- 9 No Pin
5 USB DX+ 10 NC
•
Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB header.
• Prior to installing the USB bracket, be sure to turn off your computer and unplug the power cord from the power
outlet to prevent damage to the USB bracket.
14) F_USB30_1/F_USB30_2 (USB 3.0/2.0 Headers)
The header conforms to USB 3.0/2.0 specification and can provide two USB ports. For purchasing the
optional 3.5" front panel that provides two USB 3.0/2.0 ports, please contact the local dealer.
Pin No. Definition Pin No. Definition
1 VBUS 11 D2+
2 SSRX1- 12 D2-
3 SSRX1+ 13 GND
4 GND 14 SSTX2+
5 SSTX1- 15 SSTX2-
6 SSTX1+ 16 GND
7 GND 17 SSRX2+
8 D1- 18 SSRX2-
9 D1+ 19 VBUS
10 NC 20 No Pin
F_USB30
F_U B_
F_
F_ _ B
BS_ B
SB_ B
_S S_ _ B _U _ B
S
1 2 3
12
3
12 3
12
3
1
1
1
1
BSS
S
_S
SSU
1
2
3
4
5
S3
BSSS
U
1 2 3 4
12 34
1
2
3
4
1
2
3
4
__
3
F_USB3F
10
11
20 1
DEBUG
PORT
G.QBOFM
10
9
2
1