Solved 3-pin and 4pin fan header connections. Tags: Fan Compatibility Components Last response: August 19, 2012 5:18 PM in Components Share Blaydyn August 16, 2012 1:55:14 PM Are 3-pin fan and 4-pin fan headers, and vice versa, compatible? Like say you have a 3-pin fan and plug it into a 4-pin fan header or a 4-pin fan and plug that into a 3-pin fan header. Will they work properly and without issue? Sorry if it's hard to understand, I'm not that good at explaining such things. More about : pin 4pin fan header connections | E-mail me updates | Report abuse Register or log in to remove Best solution noise August 16, 2012 3:01:36 PM Personally I'd try and verify the pin layout on the header you are connecting to but ... http://www.allpinouts.org/index.php/Motherboard_(CPU)_4_Pin_Fan This of course assumes there is no irritating plastic on the header forcing a standard connector type. | Report abuse Horizons August 17, 2012 10:29:39 AM Don't know about 4 to 3, but 3 to 4 works (I'm using it right now for my 6th case fan) | Report abuse Blaydyn August 19, 2012 5:18:29 PM Best answer selected by Blaydyn. | Report abuse Register or log in to remove Ask the community Publish Tom's Hardware>Forum>Components>3-pin and 4pin fan header connections.> Related ressources: ForumHelp connecting 2x 3pin fans to 4pin mobo header ForumProblem - 3-pin Mobo Header , but 4-pin Fan Power (not molex) Forum3-pin CPU Fan and only 4-pin CPU Fan connecter.. HELP! Forum3-pin fan vs. 4-pin fan ForumConnecting 3-pin CPU fan to 4-pin motherboard Forum3pin vs 4pin cpu heatsink/ fan connection ForumWill a 3-pin header control the Fan Speed? ForumDifference between 3pin and 4pin fan connectors? ForumCorsair H80 Has 3Pin Fan & my MB has 4Pin Fan ForumMy motherboard has 4-pin , but case fan is 3-pin ? Forum4pin fan in a 3pin fan header ? ForumWill a 3-pin Power Connector work on a 4-pin fan header ? ForumCase Fans- 4pin , 3pin , molex ForumDo they make double 4pin PWM to 3pin Y splitter cables? ForumDo most overclockers avoid the CPU fan 4-pin header ? ForumBest Cpu cooler for ~40 ForumMolex to 6 pin PCI-e connections??? ForumSimple Question on Power Connections ForumCase Fans- 4pin, 3pin, molex ForumConnecting case fan to 3-pin CPU fan connector More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !