Gigabyte GA-B85M-DASH - 11) F_USB30 (USB 3.0;2.0 Header)

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12) F_USB1/F_USB2 (USB 2.0/1.1 Headers)
The headers conform 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 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.
DEBUG
PORT
G.QBOFM
10
9
2
1
11) F_USB30 (USB 3.0/2.0 Header)
The header conforms to USB 3.0/2.0 specication 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.
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 
10
11
20
1
13) COM (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing the op-
tional 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
Pin No. Denition Pin No. Denition Pin No. Denition
1
VBUS
8
D1-
15
SSTX2-
2
SSRX1-
9
D1+
16
GND
3
SSRX1+
10
NC
17
SSRX2+
4
GND
11
D2+
18
SSRX2-
5
SSTX1-
12
D2-
19
VBUS
6
SSTX1+
13
GND
20
No Pin
7
GND
14
SSTX2+