PWM Fan Pinouts - Industry Standard & Dell configurations

[Fire$torm]

Just thought this might be useful for anyone interested or needing info.

I am in the process of doing a fan mod for my desktop to help reduce the noise level. As any Dell owner should know, all Dell systems use a proprietary 5-pin connector for PWM fans along with a non-standard layout of the 4 wires used in PWM fans. Since I have already have the info I figured it would be nice to share using diagrams I made. Sorry if they seem large.




I also drew up a diagram for a PWM fan splitter. This is great for using two fans on a radiator in a Push-Pull setup. (Diagram for Standard PWM connectors)



Edit: The 5-pin connector Dell uses is available form suppliers like Digi-Key (Link) and Jameco Electronics (Link). Note that the pins for the connector are sold separately.

Connector
Manufacture: Molex Inc.
MFG. P/N: 50-57-9405
Desc: Connector Housing - 5 Position, .100 (Pin Spacing) w/Latch
Digi-Key #: WM2930-ND

Pin
Manufacture: Molex Inc.
MFG P/N: 16-02-1114
Desc: Connector Terminal - Female (22-24 AWG) Tin
Digi-Key #: WM2569-ND

[Fire$torm]

Here are the pair of reasons I posted the above.

5-Pin to 4-Pin Adapter_Small.jpg

5-Pin connectors - Digikey
4-Pin connectors - FrozenCPU
24 Awg Wire - eBay
Expandable Sleeving - eBay
Heat Shrink - eBay