Technical information

60 Chapter 5
USB3~5 Front Panel USB Headers
The main board has four USB ports laid 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.
NOTE: 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 Header
You can connect a serial port extension bracket to this header and add a second serial port to the
system.
Pin Signal Name Pin Signal Name
1NC 2KEY
3 VCC5 4 Ground
5IRTX 6IRRX
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 USB_FP_P0+ USB Port 0 Positive Signal
6 USB_FP_P1+ USB Port 1 Positive Signal
7 GND Ground
8 GND Ground
9Key No pin
10 USB_FP_OC0 Overcurrent signal
Pin Signal Name Function
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