SMPS / PSU Power Connectors or Cables Explained in Detail

SMPS or PSU is the component that supplies power to your major computer components. In this blog I have many useful articles regarding SMPS and continuing with that here I will tell you about the different types connectors or cables of a SMPS that supply power to various computer components and devices.

SMPS with its Cables or Connectors

SMPS with its Cables or Connectors

Know more about SMPS / PSU by going through these Posts

Description & Details of SMPS Cables or Connectors

Here is the complete list and description of connectors or cables of a PSU that supply power to all your major hardware components of your PC.

SMPS or PSU Connectors

SMPS or PSU Connectors

20 + 4 Pin ATX / Motherboard Connector

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. Earlier motherboards have 20 pin sockets only but now modern day motherboards require 24-pin power connectors. Therefore nowadays all the SMPS comes with 24 pin detachable connector (20 + 4) that can be split into 20 pin and 4 pin cables.

CPU 4 + 4 Pin Connector

This is the 12 Volt connector that supply power to your CPU or Processor. Some motherboards have 4 pin 12V CPU socket and some have 8 pin 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.

SATA Power Connector

This power connector is used to power up SATA devices that mostly includes Hard Disks, DVD Writers / Drives.

Floppy 4 Pin Connector

This 4 pin power connector is used to power floppy drives. Floppy Drives are not being used commonly, but in some cases they can prove very useful.

Peripheral 4 Pin Molex Connector

Peripheral 4 Pin Molex Connector is used to provide power to IDE devices and other peripherals like Fans, case lights etc. You can also use this Molex 4 pin connector to power other devices like SATA devices, Graphics cards etc. by the use of converters or adapters e.g. Molex to SATA power connector etc.

PCI-e 6 Pin / PCI-e 8 Pin Connector

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 requires extra amount of power for their working. Budget and low-end graphics card do not need them as they draw their power from the motherboard PCI-Express x16 slot only. 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. The new PCI Express 8 Pin cable can provide maximum of 150 Watts power which is the double that of the PCI Express 6 Pin cable i.e. 75 Watts.

Note: The number and availability of these connectors varies and depends upon model and brand of the SMPS. Budget SMPS have less number of these connectors but high end Power supplies have higher number.

Must Read: PC Power Supply Calculator Tools to Find the Right SMPS


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