Budget SMPS have less number of these connectors but high-end Power supplies have a higher number. Note: The number and availability of these connectors vary and depend upon the model and brand of the SMPS. The new PCI Express 8 Pin cable can provide a maximum of 150 Watts power which is double that of the PCI Express 6 Pin cable i.e. Older mid to high-end graphics card comes with PCI-e 6 Pin slot while the newer high-end graphics comes with PCI-e 8 Pin slot. Budget and low-end graphics cards do not need them as they draw their power from the motherboard PCI-Express x16 slot only. PCI-e 6 Pin or PCI-e 6+2 Pin are 12 Volt Connectors that are used to provide power to mid to high range graphics cards that require extra amount of power for their working. by the use of converters or adapters e.g. You can also use this Molex 4 pin connector to power other devices like SATA devices, Graphics cards etc. Peripheral 4 Pin Molex Connector is used to provide power to IDE devices and other peripherals like Fans, case lights etc. Floppy Drives are not being used commonly, but in some cases they can prove very useful. This 4 pin power connector is used to power floppy drives. This power connector is used to power up SATA devices that mostly include Hard Disks, DVD Writers / Drives. ![]() Some motherboards have 4 pins 12V CPU socket and some have 8 pins 12V socket, therefore most of the good power supplies come with 8-pin (4 + 4) detachable connectors which can be split into two 4 pin connectors. This is the 12 Volt connector that supplies power to your CPU or Processor. Therefore nowadays all the SMPS comes with 24 pin detachable connector (20 + 4) that can be split into 20 pin and 4 pin cables. Earlier motherboards have 20 pin sockets only but now modern-day motherboards require 24-pin power connectors. This is the main ATX connector that supplies power to your motherboard and other components like RAM, Low-end graphics card, PCI cards that are connected to your motherboard. 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.SMPS or PSU Connectors 20 + 4 Pin ATX / Motherboard Connector If I do find exact part numbers for matching pins/housings, I'll list them here. 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. ![]() *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. ![]() PC front-panel light/button connector: standard 0.1" dual-row header with keying plugĪC97 front-panel audio connector: standard 0.1" dual-row header with keying plug They will just run at 100 all the time (unless u have a fan controller) instead of being controlled by the BIOS. (Again, almost definitely a Molex Mini-Fit Jr 5566)Ĥ-pin drive power "Standard Molex" connectorĬables are female, devices are male (male cable connectors are usually only used as adapters)įemale cable housing: Molex P/N 15-24-4048įemale cable housing: Molex P/N 67582-0000Ģ/3/4 pin fan connectors: standard 0.1" header, usually with a locking tab This connector can feature twenty or twenty four different pins, depending on the age of the power supply and the motherboard it will connect to. (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)Ħ-pin PCI Express auxiliary 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)Ĩ-pin motherboard supplemental power connector The Molex part number is 39-29-9042, from the 5566. 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.ĪTX 20 pin standard motherboard main power connectorĤ-pin motherboard supplemental power connector The connector attached to the mother board is a 20-pin dual-row Molex connector, or similar Male pins. ![]() This list is a work in progress, so please feel free to add to it. 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. 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.
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