#Molex fan connectors full#
#Molex fan connectors Pc#
#Molex fan connectors plus#

IF you decide to replace all those fans, again which fan type you buy depends on what your mobo's headers can do.

#Molex fan connectors full#

After that it is up to you to check all your fans from time to time to be sure they are still working.Ĥ. The problem with connect most fans to the PSU is that they wont be temperature controlled, theyll just spin at full speed all the time. In those cases, you can go into BIOS Setup and tell it to Ignore those fan speed signals. The female molex on the fans seems to be straight negative positive connection, but the male molex has 3 pins. Here is a picture of the connector I am using.

#Molex fan connectors Pc#

So your mobo may give out warnings that the case fans have failed because they send no speed signal. This result is valid because it is +/5,whichis within thespecification for power connectors. So basically I have two 80mm fans I stuck in the back of my pc and am wondering why they arent turning on. But your fans do not have any signal output to connect to. You see, a fan speed signal is generated by the fan motor and sent back to the mobo header on Pin #3 where it can be counted for display and monitored for failure. If you so this with custom fan cables as above, you cannot connect a speed signal wire. So, if you want to custom make fan cables as above and use them, FIRST post here exactly what mobo maker and model you have so we can look for the details in its manual.ģ. Some such headers operate only as 4-pin headers using PWM Mode (which cannot control your fans), some operate only in Voltage Control Mode (which can do what you want), and some can be configured in BIOS Setup to do either. Woodhead® Watertite® Wet-Location wiring device set the standard for the roughest, wettest and most abrasive environments while meeting NEMA type 4, 4X, 6. Woodhead® Watertite® NEMA 5-15 Connector. The tricky part is that although your mobo's headers have 4 pins, how they do fan speed control can not be deduced from that. Enabling flexible speed compatibility for applications up to 14 Gbps, Molex’s iPass connector system is ideal for the server storage market. It controls fan speed by changing the voltage on header Pin #2, and that is the only way to control the speed of those 2-wire fans you already have. That's the system used for older 3-pin fan types. This can ONLY work if your mobo's CHA_FAN or SYS_FAN headers operate in Voltage Control Mode. That, in turn, will mate with a RED wire from the fan itself when you plug it in.Ģ.

Pin #1 of the fan connector must go to one of the BLACK wires on the Molex, and Pin #2 must go to the YELLOW of the Molex. With wire cutting and splicing and soldering you could put the female Molex onto the end of the extension cable. The only way I can see to getting such a cable would be to buy a fan extension cable (female to male) and an adapter with a male fan output connector on one end and BOTH male and female 4-pin Molex connectors on the other. I have even tried to figure a way to use two or more cables with adapters to create the right one, but I can't. You want one with a female 4-pin fan connector on one end, and a female 4-pin Molex connector on the other, with proper connections for powering a fan. I have never been able to find the cable you are looking for ready to buy. Even that step requires checking some details - I'll get to that.ġ. Then you remove the tachometer, giving you 5v, data and ground, which just happens to be argb. You seperate the 12v and ground, hook them up as a 2pin molex. But you may have pointed to the best solution - replace all the fans that came pre-installed in your case with 'standard' case ventilation fans. the 6 pins are as follows: 12v, ground, tachometer, data, another ground, and 5v.

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#Molex fan connectors plus#

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