Recently, I started on a project that I wanted to power from a standard PC ATX power supply, which led to me looking for connectors to use so I didn’t have to cut up the cable to access the various voltage lines. Yes, I know that Sparkfun [carries [a [few [of [these [connectors, but I still like having MPN’s rather than relying on a single distributor, so I figured I’d document my findings here. This list is a work in progress, so please feel free to add to it. For now, I’m mostly looking for part numbers by Molex, but if anyone finds them from other manufacturers, I’ll take those as well.
ATX 20 pin standard motherboard main power connector
[(image) [(24 pin) [(20 + 4 pin)
20-pin cable housing: [Molex Series 5557
24-pin cable housing: ??
4-pin cable housing: ??
Crimp pins: [Molex Series 45750
20-pin PCB header: [Molex Series 5566
24-pin PCB header: [Molex Series 5566
4-pin motherboard supplemental power connector
(Almost definitely a Molex Mini-Fit Jr 5566, but it’s polarized differently than the 4-pin connector on the 20+4 main connector)
Female cable housing: ??
Female crimp pins: ??
Male PCB header: ??
8-pin motherboard supplemental power connector
(Almost definitely a Molex Mini-Fit Jr 5566, it’s not 2 of the 4-pin connectors side-by-side, it’s one of those combined with one of the 20+4 connectors)
Female cable housing: ??
Female crimp pins: ??
Male PCB header: ??
6-pin PCI Express auxiliary power connector
(Again, almost definitely a Molex Mini-Fit Jr 5566)
Female cable housing: ??
Female crimp pins: ??
Male PCB header: ??
4-pin drive power “Standard Molex” connector
Cables are female, devices are male (male cable connectors are usually only used as adapters)
Female cable housing: [Molex P/N 15-24-4048
Female crimp pins: [Molex P/N 02-08-1201
Male cable housing: ??
Male crimp pins: ??
Male PCB header: [Molex Series 8981
5-pin SATA power connector
Female cable housing: [Molex P/N 67582-0000
Female crimp pins: [Molex series 67581
Male PCB header: [Molex P/N 67926-0015
4-pin floppy drive power connector
Female cable housing: ??
Female crimp pins: ??
Male PCB header: ??
Others
2/3/4 pin fan connectors: standard 0.1" header, usually with a locking tab
PC front-panel light/button connector: standard 0.1" dual-row header with keying plug
AC97 front-panel audio connector: standard 0.1" dual-row header with keying plug
*Note that, unless specified, I have not actually tested any of these part numbers (though I do intend to, I just haven’t ordered any yet), this is all from searching, so YMMV. I do know from experience that especially the crimp pins don’t necessarily always work, because Molex only links a SERIES of pins to each housing, and some times not all pins in a given series actually work with a given housing. If I do find exact part numbers for matching pins/housings, I’ll list them here. One suggestion I’ve learned is that Digi-Key is actually better at pairing up housings and pins, so you can try taking the part number for the housing and searching for it on Digi-Key, and see what they suggest for matching pins.](All about the various PC power supply cables and connectors)](http://www.molex.com/molex/products/datasheet.jsp?part=active/0679260015_IDT_AND_SOLDER_CON.xml)](http://www.molex.com/molex/products/listview.jsp?query=67581&path=cHome%23%23-1%23%23-1~~ncCRIMPTERMINALS%23%230%23%238&offset=0&autoNav=1&sType=s&filter=&fs=&channel=Products)](http://www.molex.com/molex/products/datasheet.jsp?part=active/0675820000_CRIMP_HOUSINGS.xml)](http://www.molex.com/molex/products/family?key=serial_ata_power_connector&channel=products&chanName=family&pageTitle=Introduction&parentKey=serial_ata_products)](All about the various PC power supply cables and connectors)](http://www.molex.com/molex/products/listview.jsp?query=&path=cHome%23%23-1%23%23-1~~ncPCBHEADERS%23%230%23%235&offset=0&autoNav=1&sType=z&filter=&fs=categoryid%3APCBHEADERS%2Cproductname%3A"disk+drive+power"&channel=Products)](http://www.molex.com/molex/products/datasheet.jsp?part=active/0002081201_CRIMP_TERMINALS.xml)](http://www.molex.com/molex/products/datasheet.jsp?part=active/0015244048_CRIMP_HOUSINGS.xml)](http://www.molex.com/molex/products/family?key=disk_drive_power_connector&channel=PRODUCTS&chanName=family&pageTitle=Introduction)](All about the various PC power supply cables and connectors)](All about the various PC power supply cables and connectors)](All about the various PC power supply cables and connectors)](All about the various PC power supply cables and connectors)](http://www.molex.com/molex/products/listview.jsp?query=&path=cHome%23%23-1%23%23-1~~f47||4d696e692d466974204a722ee284a2~~f12||3234~~ncPCBHEADERS%23%230%23%2316&offset=0&autoNav=3&sType=z&filter=&fs=application%3Awire-to-board&channel=Products&key=fb_fan)](http://www.molex.com/molex/products/listview.jsp?query=&path=cHome%23%23-1%23%23-1~~f47||4d696e692d466974204a722ee284a2~~f12||3230~~ncPCBHEADERS%23%230%23%23t&offset=0&autoNav=3&sType=z&filter=&fs=application%3Awire-to-board&channel=Products&key=fb_fan)](http://www.molex.com/molex/products/listview.jsp?query=45750&path=cHome%23%23-1%23%23-1~~ncCRIMPTERMINALS%23%230%23%239&offset=0&autoNav=1&sType=s&filter=&fs=&channel=Products)](http://www.molex.com/molex/products/listview.jsp?query=5557&path=cHome%23%23-1%23%23-1~~q35353537~~f13||3230~~ncCRIMPHOUSINGS%23%230%23%232&offset=0&autoNav=3&sType=a&filter=&fs=&channel=Products)](All about the various PC power supply cables and connectors)](All about the various PC power supply cables and connectors)](All about the various PC power supply cables and connectors)](https://www.sparkfun.com/products/9918)](Molex Jumper 3 Wire Assembly - PRT-09919 - SparkFun Electronics)](https://www.sparkfun.com/products/9920)](Molex Jumper 5 Wire Assembly - PRT-09921 - SparkFun Electronics)](Molex Jumper 6 Wire Assembly - PRT-09922 - SparkFun Electronics)](4 Pin Molex Connector - Straight - TOL-11300 - SparkFun Electronics)