Solved Fan connections on Mobo Tags: Motherboards Power Supplies Fan Gigabyte Last response: October 14, 2011 7:05 PM in Motherboards Share Control_tech October 7, 2011 1:34:56 AM I have a Gigabyte GA-Z68X-UD3H-B3 and I have spots for 4 fan connections. CPU fan 4 pin Sytem fan 3 pin System fan 4 pin Power fan 3 pin My question is what is the signifigance of using these connections and what if the counterpart (power supply) has a 4 pin connection. More about : fan connections mobo Best solution ko888 a c 223 V Motherboard a c 1202 ) Power supply October 7, 2011 1:59:27 AM A 4-pin fan header offers fan speed monitoring and PWM (Pulse Width Modulation) speed control as long as you're using a PWM controllable fan. A 3-pin fan header offers fan speed monitoring only. The fan runs at full speed unless it has its own speed control potentiometer or step down resistors. Fans plugged directly into a power supply connector has no fan speed monitoring and runs at full speed unless it has its own speed control potentiometer or step down resistors. Share Control_tech October 7, 2011 2:06:36 AM Thanks for the reply. So I can plug the 4 pin connector into the 3 pin connection and I will just lose out on the PWM? m 0 l Related resources Fan connections on Mobo - Forum Chassis fan connections on my mobo? - Forum Fan connections On mobo - Forum How to connect two 4-pin case fans to one case fan port on the mobo? - Forum Fan connection, Mobo or SPU? - Forum Can't find your answer ? Ask ! Get the answer ko888 a c 223 V Motherboard a c 1202 ) Power supply October 7, 2011 3:21:26 AM Control_tech said:Thanks for the reply. So I can plug the 4 pin connector into the 3 pin connection and I will just lose out on the PWM? Yes. The fan will just operate at its maximum speed. m 0 l Control_tech October 14, 2011 7:05:13 PM Best answer selected by Control_tech. m 0 l Can't find your answer ? Ask ! Publish Related resources Case Fan Connectors Wont Connect to my Mobo or PSU Forum New gpu fan connect to mobo? Forum Solvedwill these two fans be able to connect on my mobo? Forum SolvedWill this connect two of my fan cables into 1 slot in my mobo? Forum SolvedShould i connect the case fan into the power supply or the mobo? Forum SolvedWhere to connect case fan on mobo? Forum SolvedDifference between connecting fans to Mobo or PSU Forum 2 cooling fans but only 1 fan connection on mobo (need solution) Forum Help with connecting front fan to mobo? Forum Can't connect 4 pin cpu fan cable into mobo Forum Need helping connecting Fractal Node 304's fan controller and Asus P8Z77-I mobo Forum How to connect these fan wires to the mobo fan header? Forum Fan not spinning, connected to MoBo Forum SolvedQuick question about my fans/mobo connection Forum SolvedUnderstanding case fan connections Forum More resources Read discussions in other Motherboards categories BIOS Boot Chipsets ASRock Asus Chaintech DFI Elitegroup FIC Foxconn Gigabyte Intel MSI-Microstar !