Next, go to the Fan Control tab and set up a temperature curve for each fan. 1. Next, head over to the Advanced tab. Generally 2-3 is suitable. Meaning you can connect up to 4 fans, depending on how much they draw power. The tacho signal from the fan sinks to ground for every revolution, the input on the motherboard is pulled high. Pulse Width Modulation. paulbee's little controller appears to solve those complications with the added bonus of being able to have more than one fan profile by using more than one controller on multiple DC headers (assuming the MOBO will permit that). It runs at about 1300 RPM when conncted to my old ASUS mother board with non-PWM 12 volt headers. If there is speed control on the second pin then that means it adjusts the speed by controlling the voltage, unlike pwm which controls the speed by turning the power going to the fans on and off in quick succession. Chassis Fan Hub CPU Cooling 10 Port 12 V SATA to Fan-Header with 4 Pin PWM Controller Efficient Chassis Adhesive Computer Cooling System Dedicated Supply from PSU to Link Multiple Points. PWM fans come with a 4-pin connectors for fully automatic speed control via your mainboard’s 4-pin PWM fan headers. The CPU PWM signal will support only so many fans unless some kind of PWM amplifier is used which can be bulky, expensive, and complicated to use. 99. When connected to 3-pin fan headers, the fan will run at full speed (unless the mainboard supports voltage based speed control). PWM stands for pulse width modulation, a technique that changes the duty cycle of a periodic digital pulse. It runs at about 1300 RPM when connected to the other non-PWM headers. The Sys fan header is definitely behaves differently from the CPU PWM header: My GlobalWin non-PWM fan operates at about 700 RPM when connected to this header. Both boards reports fan speed for both 3 and 4-pin fans but my old board was dodgy at that for 3-pin fans. A 4-pin PWM header connects to a PC fan’s connector. Yes! Cooler Master MasterFan PWM Hub - Supports up to 10 Fans (3-pin or 4-pin), Occupying only One 4-pin Motherboard Header (System Fan or CPU Fan) Types: Case Fan Accessories; Colors: Black; Length: N/A; Specifications: If 3-pin non-PWM fans are connected to this fan hub, this fan hub CANNOT give them extra PWM function. c) DCV Fans with PWM **or** DCV Header Use up to (6) DCV (0.14) fans with full speed control from PWM header and no aux power Use up to (8) DCV (< 1.0 amp total) ) fans with full speed control from PWM header with aux power Use up to (6) DCV (0.14) fans with full speed control from DCV header and no aux power Noctua Industrials go up to 0.67A. The PWM signal from the motherboard sources 5V during the on state of the pulse, otherwise it's pulled to ground. They will run at FULL SPEED. Identifying Fan Type (3 Pin or 4 Pin PWM): Please Note: Some fans may have a 4 pin connector but only 3 wires going into the back of the connector. $10.99 $ 10. On my previous board I got DC control as well as PWM but minimum speed was 40% for the case fan headers regardless of DC/PWM. A 4 pin PWM fan connector will have four square holes on the front and four wires entering the back. Depends on the motherboard. This is extremely important because it helps you monitor the effect your changes will have. The Phanteks PWM Fan Hub is capable of powering up to *11x fans (3-pin) through PWM modulation, while occupying only 1x 4-pin header of your motherboard per Fan Hub. Get it as soon as Thu, Feb … Set a minimum and maximum spinning speed for the fans in the Speeds tab. This is still considered a 3 pin fan. Please note that 4-pin fans can also be connected to your mainboard’s 3-pin fan headers though. At the same time this Fan Hub also keeps your chassis interior clean and tidy by centralizing all your fan cables. 4.4 out of 5 stars 131. Most case fan headers are rated for 1A of total power draw. PWM fan headers will always supply a full 12v on the second pin and have speed control on the 4th pin. To understand the reason for its existence, it’ll be best to revisit what PWM is all about. On my current one I can choose DC/PWM for all the fan headers in BIOS. Naturally those can take more. 3-pin fan and 4 pin motherboard connector compatibility: Usually fans use 0.2-0.35A. Some newer mobos have high amperage headers with 2A or 3A rating. Make sure manual mode is selected for all PWM controlled fans.