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nForce 750i SLI Motherboard
IEEE 1394a
The IEEE 1394 expansion cable bracket is provided in the box but if you do not require the addi-
tional external connections, you do not need to install it.
1. Secure the bracket to either the front or rear panel of your chassis (not all chassis are equipped
with the front panel option).
2. Connect the two ends of the cables to the IEEE 1394 connectors on the motherboard.
USB Headers
This motherboard contains six (6) USB 2.0 ports that are exposed on the rear panel of the chassis
(Figure 2). The motherboard also contains one 10-pin internal header connectors onboard that can
be used to connect an optional external bracket containing four (2) more USB 2.0 ports.
1. Secure the bracket to either the front or rear panel of your chassis (not all chassis are equipped
with the front panel option).
2. Connect the two ends of the cables to the USB 2.0 headers on the motherboard.
Connector Pin Signal Pin Signal
1 TPA+ 2 TPA-
3 GND 4 GND
5 TPB+ 6 TPB-
7 +12V 8 +12V
9 Empty 10 GND
v
Pin Assignments
Connector Pin Signal Pin Signal
1 5V_DUAL 2 5V_DUAL
3 Data- 4 Data-
5 Data+ 6 Data+
7 GND 8 GND
9 Empty 10 No Connect
v
Pin Assignments