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4 pin usb

Forum Motherboards & Memory : Gigabyte - 4 pin usb

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knownn   09-15-2009 at 04:13:15 AM

Hello :)

Im buliding my first pc and everywere i look it says a front panel usb should be 5 pins, but in this case it only 4 pins, any ideas?Also mabye someone knows were i get a pic of connecing the usb pins in the mobo.

the mother bored im using is a gigabyte MA785GM-US2H.

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Bronze Motherboards badge GhislainG   09-15-2009 at 05:11:35 AM
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You need 4 pins. If the case doesn't have a USB connector, then each wire should be identified. All you need to do is connect each one to the corresponding pin.

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Silver Motherboards badge bilbat   09-15-2009 at 05:35:23 AM
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Please post case manufacturer and part number...
USB headers are normally either 5 pin (with one empty), or 2x5's with one hole blocked, to 'key' the connector so it can't be plugged in wrong.

The pins closest to the CPU are power - +5V
The next pin down is signal -
The next pin down is signal +
The next pin down is ground

on the right side of each header pair, the bottom pin has no connection...

Page 30 of your manual:
http://img44.imageshack.us/img44/5066/0083ge.jpg

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Bronze Motherboards badge GhislainG   09-15-2009 at 02:05:03 PM
- 0 +

If your case has individual wires (very few cases do), then you should connect them as follows:

Pin 1 +5V
Pin 3 Data -
Pin 5 Data +
Pin 7 Ground

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