I'm experiencing some unusual difficulty looking for a manufacturer part number for the connector shown here:
- http://www.moddiy.com/products/modDIY-Male-4%252dPin-(3%252b1)-PWM-Fan-Connector-(Molex-%232510)-with-Pins.html
- http://www.performance-pcs.com/male-4-pin-3-1-pwm-fan-connector-molex-2510.html
- http://www.bizrate.com/system-cooling/oid4026851578/merchant/
- http://1088992.en.makepolo.com/products/Male-3-Pin-Fan-Extension-Connector-p87525796.html
.. which is found on computer fan cable extensions. There are 3-pin versions and 4-pin versions that use a polarization rib (power, tachometer, PWM control): http://www.formfactors.org/developer/specs/REV1_2_Public.pdf
It's everywhere on the web in already-assembled cables but I can't find anything regarding the connector itself using the regular search tools (digikey/mouser/farnell/google)...
The best "reference" I could find is MDY-CO052
.