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Installing the Motherboard
1394A2: Onboard IEEE 1394a headers (optional)
Connect this header to any device with IEEE 1394a interface.
Pin Signal Name Function
1 TPA+ 2 TPA-
3 GND 4 GND
5 TPB+ 6 TPB-
7 Cable-Power 8 Cable-Power
Pin Signal Name
Pin Signal Name
9 Key Pin 10 GND
COM2: Onboard serial port header (optional)
Connect a serial port extension bracket to this header to add a second serial port to your
system.
1 NDCDB Data carry detect
2 NSINB Serial Data In
3 NSOUTB Serail Data Out
4 NDTRB Data terminal ready
5 GND Ground
6 NDSRB Date set ready
7 NRTSB Request to send
8 NCTSB Clear to send
9 NRIB Ring Indicator
10 KEY Key
Pin Signal Name Function
USB3/4: Front Panel USB header
The motherboard has four USB ports installed on the rear edge I/O port array. Additionally,
there are two USB headers onboard. Use the auxiliary USB headers to connect the front-
mounted ports to the motherboard.
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
9 Key No pin
10 USB_FP_OC0 Overcurrent signal
Pin Signal Name Function
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