# Manufacturer reference or part number for “3+1 fan connector crimp male wire-to-wire”

I'm experiencing some unusual difficulty looking for a manufacturer part number for the connector shown here:

.. 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.

• It looks like some kind of Molex SL connector with a special keying – Daniel Mar 7 '16 at 4:09
• Actually it's a Molex KK, based on the part numbers in that formfactors.org document... but I can't find that crimp-pin version that you've shown here. – Daniel Mar 7 '16 at 4:23
• I'm guessing that connector is not a Molex part, but a compatible part of some other make. molex KK 254 will connect to regular 2.54mm square pin headers, and everyone does them.... – Jasen Mar 10 '16 at 3:22
• My guess is those sockets simply aren't made by the major connector manufacturer and the only source is off-brand vendors in china. – Peter Green Mar 23 '16 at 18:46

direct quote from wikipedia: "computer_fan"

Three-pin Molex connector KK family

This Molex connector is used when connecting a fan to the motherboard or other circuit board. It is a small, thick, rectangular in-line female connector with two polarizing tabs on the outer-most edge of one long side. Pins are square and on a 0.1 inch (2.54 mm) pitch. The three pins are used for ground, +12 V power, and a tachometer signal. The Molex part number of receptacle is 22-01-3037. The Molex part number of the individual crimp contacts is 08-50-0114. The matching PCB header Molex part number is 22-23-2031.

Four-pin Molex connector KK family

This is a special variant of the Molex KK connector with four pins but with the locking/polarisation features of a three-pin connector. The additional pin is used for a pulse-width modulation signal to provide variable speed control.[22] These can be plugged into 3-pin headers, but will lose their fan speed control. The Molex part number of receptacle is 47054-1000. The Molex part number of individual crimp contacts is 08-50-0114. The Molex part number of the header is 47053-1000.

• Hi, sorry but the part I'm inquiring about in is the male wire-to-wire part, which is not 47053-1000 (which is wire-to-board, not crimp) or 47054-1000 (which is female, not male). – cJ Zougloub Mar 7 '16 at 14:38
• ah, sorry I didn't read the question fully. – Jasen Mar 10 '16 at 3:20

There are several of these housings out there, most of which are off-brand. The only name brand I could find is a Molex SPOX connector. The 29-11-0032 is a 4-pin connector that we use in short jumpers connect hot-swap fans to the motherboard fan headers.