Fan help Tags: New Build Fan Motherboards Systems Last response: March 26, 2010 9:24 PM in Systems Share daman March 26, 2010 9:16:29 PM Hey guys i bought this fan today its a 120mm masscool fan it has a 3pin for the motherboard and a molex, what i want to know is do i plug both in or just one? its going in an antec300 in the back on the case More about : fan Alvin Smith March 26, 2010 9:24:10 PM either/or ... ... most PSUs have a "Fans Only Molex Leg" on the harness ... usually has black and yellow wires only ... ... Depends on if you want active fan control. = Alvin = m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedCase fan airflow help/tips Forum Solvedcase fan set up help Forum SolvedWill mounting these fan help cooling? Forum SolvedNZXT H440 Fan Controller Help Forum SolvedMobo has 2 fan ports, case comes with 5 fans HELP Forum SolvedNew build issue. CPU fan works, can't achieve post. Please Help! Forum SolvedNeed Help! Intake and exhaus Case fan setup!!! Forum SolvedFan replacement help Forum SolvedCorsair Air 540 case fan help. Forum SolvedPsu fan placement help! Forum SolvedHelp connecting additional fans to motherboard or PSU - Only 2 CHA_FAN connectors Forum SolvedFan LED help Forum SolvedConnecting LED fan (need help) Forum SolvedFan speed controller help? Forum SolvedCPU Fan Speed 1900 and CPU Temp 50c Just from bios! Help! Forum SolvedLiquid cooling and Fan Configuration help Forum SolvedHelp with fan management components for water cooled PC Forum SolvedBitfenix Prodigy M fan configuration help Forum SolvedHelp with fan configuration Forum SolvedZalman z9 plus rear fan- where to install/give power- help! Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !