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Gigabyte GA-P67A-UD4-B3 System Fan 2 Just 5 Volts ?

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I've experienced this with other Gigabyte boards but has anyone with a UD4 noticed that the Sys Fan 2 4 pin fan header only puts out 5 volts ? Any 3 pin fan I connect to it only runs at 450 +/- rpm. The manual says it's 12 volts. The CPU 4 pin header works at normal voltage and speed. I googled this and see many references but no answer or solution. Any insight would be appreciated.
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7 3930K Asus Sabertooth X79 NVIDIA GeForce GTS 450 Samsung  
Hard DriveOptical DriveOSMonitor
Intel 520 120gb SSD LG 24x Win XP Pro 64 / Win 7 Pro 64 Dell U2412M 
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Corsair AX650 Lian LI PC9F Logitech G500 Razer Goliathus 
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Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
PowerCaseMouseMouse Pad
Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
Audio
Plantronics Gamecom 788 
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Overclock.net › Forums › Intel › Intel Motherboards › Gigabyte GA-P67A-UD4-B3 System Fan 2 Just 5 Volts ?