Gigabyte B550M AORUS ELITE AX User Manual page 19

13) F_USB1 (USB 2.0/1.1 Header)
The header conforms 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
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) 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.
9
10
F_USB3 F
15) TPM (Trusted Platform Module Header)
You may connect a TPM (Trusted Platform Module) to this header.
_
_B
11
12
S F_
B_
Pin No. Definition
1
2
_
B
S B_
B
_ S
S_
_
B
Pin No. Definition
1
_ U
2
_
B
S _
Pin No. Definition
1
2
Pin No. Definition
1 Power (5V)
2 Power (5V)
3 USB DX-
4 USB DY-
B S_
5 USB DX+
1 NDCD-
2 NSIN
3 NSOUT
4 NDTR-
5 GND
1
LAD0
2
VCC3
3
LAD1
4
No Pin
5
LAD2
6
LCLK
- 19 -
6 USB DY+
7 GND
8 GND
9 No Pin
10 NC
B
Pin No. Definition
6 NDSR-
7 NRTS-
8 NCTS-
F
9 NRI-
10 No Pin
_ 0
_ F
Pin No. Definition
7
LAD3
8
GND
9
LFRAME
10
NC
11
SERIRQ
_ 0 F
12
LRESET
S
S