A power supply unit (PSU) usually converts mains AC to low-voltage regulated DC power for the internal components. Most modern desktop personal computer power supplies conform to the ATX specification. Although there are a lot of other standard and proprietary power supply variants.

Show device-specific * / Apple / Compaq / Dell / HP / IBM pinouts only (please note that filtering may not be accurate) or follow to 22 OLD hardware pinouts.
See also Chargers and power adapters connectors for various hardware pinouts
  • 12 pin 2x MOLEX 15-48-0106 connector drawing6 pin 2x MOLEX 90331-0001 connector drawing
    AT motherboard power supply AT PSU's were used before ATX become to be standard.
  • 6 pin MiniFit Jr 5557-6 (MOLEX 39-30-1060) female connector drawing6 pin MiniFit Jr 5566-6 (MOLEX 39-01-2060) male connector drawing
    ATX Optional power connector used on some ATX / NLX motheboards (rare)
  • 4 pin MiniFit Jr 5557-4 (molex 39-29-9042) female connector drawing4 pin MiniFit Jr 5566-4 male connector drawing
    ATX / BTX +12V power connector used on modern ATX / BTX motherboards
  • 24 pin MiniFit Jr 5566-24 male (MOLEX 44206-0007) connector drawing24 pin MiniFit Jr 5557-24 female (MOLEX 39-01-2240) connector drawing
    ATX 24 pin power supply connector ATX 2.2 and later (ATX12V 2) is common ATX standard, 24 pin connector.
  • 6 pin ATX AUX power connector drawing
    ATX Aux power connector To be used on ATX / NLX motherboards requiring 250W or 300W. Also marked as P14 connector
  • 4 pin Mini-Molex (Berg plug) connector drawing
    ATX PC floppy power connector Used for 3.5 floppies
  • 4 pin Molex power connector drawing
    ATX PC peripheral power connector Used to power on PATA drives, CD-ROMs, add-on fans, extra video card power, supplemental motherboard power, case lighting.
  • 20 pin MiniFit Jr 5566-20 male (MOLEX 39-29-9202) connector drawing20 pin MiniFit Jr 5557-20 female (MOLEX 39-01-2200) connector drawing
    ATX power supply connector v 1.x with 20 pin connector was widely used at PC motherboard. Replaced by v 2.x with 24 pin connector
  • 8 pin MiniFit Jr 5557-8 female connector drawing8 pin MiniFit Jr 5566-8 male connector drawing
    ATX12V1/EPS12V used on modern ATX motherboards
  • 24 pin MiniFit Jr 5566-24 male (MOLEX 44206-0007) connector drawing24 pin MiniFit Jr 5557-24 female (MOLEX 39-01-2240) connector drawing
    BTX motherboard power supply standard interface between BTX motherboard and compatible power supply
  • 15 pin Molex 67581-0000 SATA power connector drawing15 pin Molex 67582-0000 SATA plug connector drawing
    SATA power connector Serial ATA specifies a fifteen-pin power connector. Slimline connector with six pins is used for some small form-factor applications.
  • 6 pin MiniFit Jr 5557-6 (MOLEX 39-30-1060) female connector drawing6 pin MiniFit Jr 5566-6 (MOLEX 39-01-2060) male connector drawing
    SFX Optional Power 
  • 20 pin MiniFit Jr 5566-20 male (MOLEX 39-29-9202) connector drawing20 pin MiniFit Jr 5557-20 female (MOLEX 39-01-2200) connector drawing
    SFX Power Supply Same as ATX except that -5VDC is removed from pin 18
  • 8 pin MiniFit Jr 5566-8 male connector drawing8 pin MiniFit Jr 5557-8 female connector drawing
    WTX 12V CPU (P3) This connector provides 12V DC power to DC-DC convertors, Voltage regulator modules and so on
  • 6 pin MiniFit Jr 5566-6 (MOLEX 39-01-2060) male connector drawing6 pin MiniFit Jr 5557-6 (MOLEX 39-30-1060) female connector drawing
    WTX 12V CPU (P4/P5) This connector provides 12V power to to Voltage regulator modules for processor and so on
  • 22 pin MOLEX 39-29-9222 connector drawing
    WTX Additional (P2) 
  • 24 pin MiniFit Jr 5566-24 male (MOLEX 44206-0007) connector drawing24 pin MiniFit Jr 5557-24 female (MOLEX 39-01-2240) connector drawing
    WTX motherboard power supply Main (P1) pinout

Apple Pinouts

Compaq Pinouts

Dell Pinouts

HP Pinouts

IBM Pinouts


 
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