

On the 4-pin connector you show in your picture, the two pins missing wires are #1 - Ground, and #2 - +12VDC supply. Because of the groove on one side that mates with a tongue on the mobo male port, it only fits on one way. If you have plugged this into the mobo's 4-pin SYS_FAN port it should work just fine. Monitor: Asus VG248QE 144Hz 24.0" Monitor Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD WriterĬase Fan: Noctua NF-A8 PWM 32.7 CFM 80mm Fan Power Supply: Corsair CSM 550W 80+ Gold Certified Semi-Modular ATX Power Supply Video Card: Asus GeForce GTX 970 4GB STRIX Video Card Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive Memory: Crucial Ballistix Tactical 8GB (2 x 4GB) DDR3-1600 Memory Motherboard: ASRock Z97M-ITX/AC Mini ITX LGA1150 Motherboard

So, where do you guys think the problem is?ĬPU: Intel Core i5-4690K 3.5GHz Quad-Core ProcessorĬPU Cooler: Noctua NH-L9i 57.5 CFM CPU Cooler Then I decide to have SilverStone Technology All Black 1-to-8 PWM Fan Hub (CPF04), now all my fans are running at full speed. And I can control those Noctua just fine. Previously, I used 3 Y cables to connect 4 fans directly to the motherboard which has only 1 socket.

I currently have 5 case fans (3 Noctua, 2 stock Corsair).
