Question about 4 pin connectors

[CB_J_IRacing]

So technically my headers for fans are all being used but I have plenty of LED, LED CPU, LED1,2,3...etc that are free. They don't have the clip on the header to hold it there, but would one of these LED headers power a fan and be safe or not fall off easily without a clip?? Camera won't focus but trying to give an image. There's one right in the center of the image

[NotSoEpicMods]

I would not use an rgb header for a fan. The header could send voltage into the rpm sense and pwm control wires of the fan and damage things. I would use spliters off of the MB headers, assuming they can handle the amount of power needed, or get a fan controller or direct wire them with an adapter.

[LogicalDrm]

What mobo? 4pin RGB headers are different than 4pin fan headers. You will break hesder, fan or both by using wrong header. RGB pinout is 12V, G, R, B. Fan is 12V, GND, RPM PWM.

[Sir0Tek]

10 hours ago, CB_J_IRacing said:

So technically my headers for fans are all being used but I have plenty of LED, LED CPU, LED1,2,3...etc that are free. They don't have the clip on the header to hold it there, but would one of these LED headers power a fan and be safe or not fall off easily without a clip?? Camera won't focus but trying to give an image. There's one right in the center of the image.

Try an Y-connector to use 2 fans on one pwm-socket.

[mariushm]

Either use fan splitters, or just buy SATA/Molex to fan header adapters. Or a fan controller.

 

If you're really forced to, use a needle or paper clip to pull out the pins for pwm and rpm from the fan connector, leaving just the 12v and ground pins....

I would still not use it though, as it's dangerous.  If for some reason the fan fails or the blades are blocked or rarely even due to regular shut down, the motor can kick back some high voltage (voltage spikes) which could damage any potential led controller controlling that header. Fans should have protection diodes inside the fax but sometimes they're missing or ineffective.

Also, fans usually pull a lot of current when starting due to friction and inertia and the led controller may not be designed to handle such high current or the pwm feature (which allows you to change colors and brightness of various colors) can affect the fan startup.

 

[CB_J_IRacing]

Dang I didn't get a notification.. it's a b450m mini Mobo but I ended up finding another header but I can't get to it because the GPU sits too close. It's a 2070 super ventus OC and I just have to take the glass panel off when using. It drops from mid-high 70s down to low 60s just doing that. Im just kinda screwed with my current setup. I know those Tempe aren't horrible, I just find it unnecessary

 

But yeah I didn't end up adding another fan

 

Thanks I'll look for the adapters guys