Gigabyte GA-VM900MC Manual - Page 27

F_USB1/F_USB2USB Headers, COMB Serial Port Header

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English 15) COMB (Serial Port Header) The COMB header can provide one serial port via an optional COM port cable. For purchasing the optional COM port cable, please contact the local dealer. 2 10 1 9 Pin No. 1 2 3 4 5 6 7 8 9 10 Definition NDCD BNSIN B NSOUT B NDTR BGND NDSR BNRTS BNCTS BNRI BNo Pin 16) F_USB1/F_USB2(USB 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 1 Power (5V) 2 10 2 Power (5V) 3 USB DX- 1 9 4 USB DY- 5 USB DX+ 6 USB DY + 7 GND 8 GND 9 No Pin 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. - 27 - Hardware Installation

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Hardware Installation
- 27 -
English
16)
F_USB1/F_USB2(USB 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
1
Power (5V)
2
Power (5V)
3
USB DX-
4
USB DY-
5
USB DX+
6
USB DY +
7
GND
8
GND
9
No Pin
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.
15)
COMB (Serial Port Header)
The COMB 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
1
NDCD B-
2
NSIN B
3
NSOUT B
4
NDTR B-
5
GND
6
NDSR B-
7
NRTS B-
8
NCTS B-
9
NRI B-
10
No Pin
10
9
2
1
1
2
9
10