Gigabyte B550M DS3H - Page 18

13) F_USB1 (USB 2.0/1.1 Header)
 TheheaderconformstoUSB2.0/1.1specication.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. Denition PinNo. Denition
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 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.
10
9
2
1
14) 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.
PinNo. Denition PinNo. Denition
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) TPM (Trusted Platform Module Header)
You may connect a TPM (Trusted Platform Module) to this header.
PinNo. Denition PinNo. Denition
1
LAD0
7
LAD3
2
VCC3
8
GND
3
LAD1
9
LFRAME
4
NoPin
10
NC
5
LAD2
11
SERIRQ
6
LCLK
12
LRESET
F_USB30
F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3  
 S3
BSSS

U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
B_
F
_0
S
S
_0F
_F
_
_
__B


U
S  _S
_
SF_
B 
USB0_B
B_
B_
F_USB3

F_USB303

_

_3U
S_
12
11
2
1
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