Gigabyte B450M DS3H User Manual page 17

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11) F_USB30 (USB 3.1 Gen 1 Header)
The header conforms to USB 3.1 Gen 1 and USB 2.0 specification and can provide two USB ports. For
purchasing the optional 3.5" front panel that provides two USB 3.1 Gen 1 ports, please contact the local
dealer.
1
F_USB30
20
12) 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.
9
10
• Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB 2.0/1.1 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.
13) COM (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.
S
9
1
10
2
S
_
Pin No. Definition
1
VBUS
2
SSRX1-
10
3
SSRX1+
F_ U
4
GND
5
SSTX1-
11
6
SSTX1+
7
GND
8
D1-
9
D1+
10
NC
B_
Pin No. Definition
1
Power (5V)
2
Power (5V)
1
2
3
USB DX-
4
USB DY-
5
USB DX+
S
B S S
3
Pin No. Definition
1
NDCD-
2
NSIN
3
NSOUT
4
NDTR-
5
GND
- 17 -
B_
Pin No. Definition
11
D2+
12
D2-
13
GND
14
SSTX2+
15
SSTX2-
16
GND
17
SSRX2+
18
SSRX2-
19
VBUS
20
No Pin
B S S
1
Pin No. Definition
6
USB DY+
S
7
GND
8
GND
9
No Pin
10
NC
1 2 3
S
Pin No. Definition
6
NDSR-
7
NRTS-
8
NCTS-
S F
9
NRI-
_
10
No Pin
_
S
_S
F_
_S
U
_ _
3
_
_B

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