Connecting 4-3 pin headers Tags: New Build Sabertooth Systems Last response: December 22, 2012 12:36 AM in Systems Share iSprinKle December 22, 2012 12:32:21 AM Hello, I'm getting the Z77 Sabertooth, which has 4-pin fan headers, but the Thor case I have has fans with 3-Pin heads. Will they still work? More about : connecting pin headers | E-mail me updates | Report abuse Reply to iSprinKle Register or log in to remove manofchalk December 22, 2012 12:36:11 AM Yes. That last pin is the PWM signal, which tells the mobo how fast the fan is spinning. The mobo can roughly guess the RPM of the fan by the voltage its providing, just the PWM is more exact. | Report abuse Reply to manofchalk Ask the community Post an answer Tom's Hardware>Forum>Systems>Connecting 4-3 pin headers> Related ressources: ForumMSI P67A-C 43 B3 USB Headers ForumMSI mobo fan headers 4 pin is there adaptor? ForumPin orientation for the headers ForumPin Headers ForumConnecting keyboard USB ports to Internal USB headers ForumStart and Restart headers . ForumHelp connecting 2x 3 pin fans to 4 pin mobo header ForumGA-EP 43 -UD3L reboot loop on power up ForumHelp with connecting front panel headers ... Forum3- pin and 4 pin fan header connections. ForumGIGABYTE GA-EP 43 T-UD3L HELP ForumASUS P8Z77-V Fan headers and Fan Xpert 2 ForumHelp with motherboard 9- pin front panel headers universal? ForumHeaders won't work despite being connected ForumWill a 3- pin header control the Fan Speed? ForumChecking for PC Upgrade ForumNot connecting to the internet? ForumConnecting to DSL without an ethernet cable ForumConnecting case to mainboard ForumNeed help connecting mobo to cx600v2 More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !