Converting 3pin fan to USB Tags: Fan USB Components Last response: April 10, 2010 2:37 AM in Components Share tarshm April 10, 2010 2:12:35 AM Im bored and want to convert a few old 3pin 2.5inch fans to usb to cool my laptop the fan has 3 cables (red white and black) anyone have an idea of how to hook this up to a usb More about : converting 3pin fan usb saaiello April 10, 2010 2:26:10 AM I think you need different fans to run off of USB since USB only has 5 volts comeing out if thats enough to get them spinning it wont spin very fast. Just use the black and red wires you dont need the white wire. Red to +5volt black to ground. m 0 l tarshm April 10, 2010 2:37:44 AM cheers mate, ill give it ago if anything ill gain a bit more knowledge in electronics m 0 l Can't find your answer ? Ask ! Publish Related resources PCI-e USB3.0 add-on card & 3-pin fan cable? Forum I converted my Antec 900 fans from Molex to 3-pin Forum Solvedcan i put a 3pin fan in a 4 pin fan connector Forum Solved4-pin Fan To 3-pin Header On Motherboard? Forum SolvedQuestion regarding 3pin and 4pin system fan settings Forum SolvedIs it okay to plug in a 3-pin case fan plug into a 4-pin socket on my mobo? Forum SolvedMotherboard only have 1 (3-pin) case fan connector Forum SolvedFan uses 3-pin, MoBo takes 4-pin fans? Forum Solved4pin fan on motherboard with 3pin fan Forum SolvedSwifttech mcp655 modified for pwm (by frozen CPU) with a 3-pin fan controller? Forum SolvedMOD - Possible to re-wire fans from Molex to 3-Pin Fan? Forum SolvedCpu fan At 100% 3pin to 4pin Forum SolvedWill my 3-pin fans work on 4-pin fan connectors? Forum Solved3pin to motherboard 4 pin chassis fans Forum Solved2x 3-pin fans in 1 system fan header? Forum SolvedCan i manually control the speed of my two 3-pin case fans if they are plugged in 4-pin slot? New to pc's - Pls help! :) Forum Solved3-pin fan connectors Motherboard got 1 chassis fan connector 3 pin Forum SolvedIs it safe to run 3 fans of BitFenix Alchemy 3pin x3 Fan adaptor Forum Solved3pin fan into 4pin mobo connector Forum SolvedLooking for 3pin fan cable Forum More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !