Question about ASUS MB M3A78-EMH HDMI RT Motherboard
Asus M3A78EM,M.B. fans for cpu cooling have each got extra yellow wire
Your motherboard has a 4 pin connector for the CPU fan AND a 3 pin chassis fan connector.
Do you have the manual for the motherboard?
On page 1-8 the MB layout shows a 4-pin CPU connector about 1/2 inch behind the ethernet/lan connector. It should be screened on the MB as CPU_FAN.
The connector for the chassis fan is in the upper right of the board, just above and to the right of the RAM slot furthest to the right. It should be screened CHA_FAN on the MB.
If you do not have a manual, comment back and I can lead you there on the Asus support site.
Good luck and thanks for using Fixya.
Posted on Feb 14, 2009
If your cpu fan has a 4 pin connector & your mb has a 3 pin you can still use it. Just leave one pin exposed. The extra pin is for a speed control sensor that not all mb's support. The chassis fan has a different connector on the board marked "cha fan". This one is a 3 pin connector. Most of the asus boards have 1 of these. If you wish to run more than one you can either buy a "y" adapter that allows you to connect 2 fans to 1, you could use an extra 4 pin molex to power an extra fan but that would give you no control over the fan, or you could buy a fan controller and hook all your extra fans to it. Hope this helps & please take a moment to rate my solution fixya. Thanks.
Posted on Feb 14, 2009
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Posted on Jan 02, 2017
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