Gigabyte GA-8S661FXM-775 13 F1USB / F2USB Front USB Connectors, CI Chassis Intrusion, Case Open

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13)F1_USB / F2_USB (Front USB Connectors)

Be careful with the polarity of the front USB connector. Check the pin assignment carefully while you connect the front USB cable, incorrect connection between the cable and connector will make the device unable to work or even damage it. For optional front USB cable, please contact your local dealer.

		Pin No.	Definition
2	10	1	Power
1	9	2	Power
		3	USB0 DX-
		4	USB1 Dy-
		5	USB0 DX+
		6	USB1 Dy+
		7	GND
		8	GND
		9	No Pin
		10	NC

14)CI (Chassis Intrusion, Case Open)

This 2-pin connector allows your system to detect if the chassis cover is removed. You can check the "Case Open" status in BIOS Setup.

	Pin No.	Definition
1	1	Signal
	2	GND

GA-8S661FXM-775 Motherboard - 24 -