[jaco047]

I've just got a Gigabyte 990FXA-UD3 motherboard, an Antec 300 Illusion Mid-tower case, and OCZ ZT Series 750W power supply unit, and I've run into a problem connecting the case fans to the mobo/PSU.

The case has 4 fans (all with three-prong plugs) and the mobo only has 3 fan connectors (excluding the CPU fan connector) with 2 three-prong connectors (marked PWR_FAN and SYS_FAN2) and 1 four-prong connector (marked SYS_FAN1). 2 fans are in the front, 1 in back, and 1 on top. All the case fans also already have speed controllers attached.

Which fan plugs go in which connectors?

What other cables will I need to make all 4 case fans run?

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jaco047
See page 22 of your user manual http://download.giga...90fxa-ud3_e.pdf

PWR_FAN is for connecting some PSUs to, not all PSUs require this so will not have the cable and connector.
SYS_FAN2 any one of you case fans can connect to this.
and 1 four-prong connector (marked SYS_FAN1). this is used for sensing and controlling the fan speed, you can connect one of your case fans to this and use the fans own speed controller.

Any additional fans can be fed from the PSU using molex to fan adapters http://www.google.co...ed=0CGMQ8gIwAA#

Hope this helps get you sorted and let us know how you are getting on.

[phillpower2]

jaco047
See page 22 of your user manual http://download.giga...90fxa-ud3_e.pdf

PWR_FAN is for connecting some PSUs to, not all PSUs require this so will not have the cable and connector.
SYS_FAN2 any one of you case fans can connect to this.
and 1 four-prong connector (marked SYS_FAN1). this is used for sensing and controlling the fan speed, you can connect one of your case fans to this and use the fans own speed controller.

Any additional fans can be fed from the PSU using molex to fan adapters http://www.google.co...ed=0CGMQ8gIwAA#

Hope this helps get you sorted and let us know how you are getting on.