ECS 945GCT-M3, Manual, Page: 25 / 60

Installing the Motherboard
19
USB1~2: Front Panel USB headers
The motherboard has four USB ports installed on the rear edge I/O port array.
Additionally, some computer cases have USB ports at the front of the case. If you
have this kind of case, use auxiliary USB connector to connect the front-mounted
ports to the motherboard.
Please make sure that the USB cable has the same pin assignment as
indicated above. A different pin assignment may cause damage or system
hang-up.
COM2: Onboard serial port connector (optional)
Connect a serial port extension bracket to this header to add a second serial port to
your system.
1
DCDB Data Carrier Detect
2
SINB Serial Input
3
SOUTB UART B Serial Output
4
DTRB UART B Data Terminal Ready
5
GND Ground
6
DSRB Data Set Ready
7
RTSB RART B Request to Send
8
CTSB Clear to Send
9
RI Ring Indicator
10
Key No pin
Pin Signal Name Function
1
USBPWR Front Panel USB Power
2
USBPWR Front Panel USB Power
3
USB_FP_P0- USB Port 0 Negative Signal
4
USB_FP_P1- USB Port 1 Negative Signal
5
US USB Port 0 Positive Signal
6
US USB Port 1 Positive Signal
7
GND Ground
8
GND Ground
9
Key No pin
10
USB_FP_OC0 Overcurrent signal
Pin Signal Name Function