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Old 06-15-2004, 12:33 AM   #1 (permalink)
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Default Plugging a case fan into the motherboard

I just put two more fans in my computer case last night, and I noticed that along with the power cable on the fan, there was also a small 3 pin cable that can plug into the motherboard. There are two places for extra fans to be plugged into my motherboard, and I only have two case fans, so I don't know whether I need to plug them in or not. Right now they're just plugged into the power supply and they're working fine, so what's the purpose of plugging them into the motherboard? Thanks.
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Old 06-15-2004, 12:45 AM   #2 (permalink)
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YOu can plug them into the motherboard but that would take up your mobos power. And they run at speeds according to how fast your comps running like on load. Like i had one led fan plugged in when comp was just sitting there the leds would flash because they had only got enough power to spin at about 650 rpm. And when it was like 50% cpu usage they had gone up to about 5000rpm and almost spun out. So leave them plugged into the powersupply. WOrks BETteeR!
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Old 06-15-2004, 12:51 AM   #3 (permalink)
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I have my case fan plugged into the 'system fan' plug on the motherboard. I have this there so i can monitor the speed of the fan.
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Old 06-15-2004, 01:03 AM   #4 (permalink)
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Yah sometimes it works and you can monitor it that way. But for me iit just wasnt gonna work because all i had was led fans which blink most of the time becasue its only sending a little power. it will work though you can do it no problem.
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P4 2.26 ghz, Intel d850emv2 mobo, 768mb of pc800, sony 4x dvd-rw, teac burner, nvidia ti4600 graphics, enermax 330watt ps
4 silent uv fans, cold cathodes in full tower antec case, round ide cables

SOny vaio 2.66 ht ghz modded into raidmax case with green cold cathodes.
P4 2.8ghz HT, 512mb ddr, Intel KD865gbfl, onboard video, raidmax case, blue cathodes, round ide, loomed wires, 4x dvd burner, wd sata 80gb hard drive
Intel d865perl, 2.8ghz northwood, antec sonata, wd caviar 20gb, Corsair 512mbx1 for now. 380watt psu, ati 9600, dvdrom cdrw floppy in black too match case
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