How To Windows ATX 6 pin 12V Power Connector Pinout Pinout for the ATX 6 pin (3x2) 12V Motherboard Power Connector Share Pin Email Print 6 Pin Motherboard Power Connector. Tim Fisher Windows Guides & Tutorials Drivers & Hardware Customizing File & Folder Management Users & Accounts Drive Management System & Security Basics Installing & Upgrading Tips & Tricks Key Concepts by Tim Fisher Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. Updated July 01, 2019 The ATX 6 pin power supply connector is a motherboard power connector used to provide +12 VDC to the processor voltage regulator. This 6-pin connector is also sometimes used to provide extra power to high-end video cards. On motherboards, the more common connector used for this purpose is the ATX 4 pin Power Connector, used either by itself or with a second 4-pin connector, creating an 8-pin connector. The terms "PCI Express cables" or "PEG cables" (for PCI Express Graphics) are sometimes used to describe a 6 pin 12V power connector. ATX 6 pin 12V Power Connector Pinout (ATX v2.2) Below is the pinout for the standard ATX 6 pin (3x2) 12V power connector as of Version 2.2 of the ATX Specification (PDF). If you're using this pinout table to test power supply voltages, be aware that the voltages must be within ATX specified tolerances. Pinout Reference for ATX 6 pin 12V Power Connectors Pin Name Color Description 1 COM Black Ground 2 COM Black Ground 3 COM Black Ground 4 +12VDC Yellow +12 VDC 5 +12VDC Yellow +12 VDC 6 +12VDC Yellow +12 VDC You can see other ATX power supply connector pinouts in our ATX Power Supply Pinout Tables list. Using an ATX 6 pin 12V Power Connector The 6 pin 12V power connector is used to power PCI Express expansion cards that require more power than their expansion slots can provide, (which is 75 watts. Some video cards, for example, draw more than 75 watts, in which case connecting a 6 pin 12V power cable can provide more power to the card. Video cards sometimes come with an 8 pin connector if they can utilize more power than what a 6 pin cable can provide. If this is the case, but you only have a 6 pin 12V power connector, a 6-pin one will fit but won't provide any more than what the 6-pin provides. Unfortunately, even though a smaller cable fits, some cards simply won't work properly without the full power provided by an 8-pin connector. Be sure to check your video card's documentation to see if this 6-instead-of-8-pin configuration will work for you. Some power supplies come with a 6+2 PCI Express power cable, which is a cable that has both a 6 pin power connector and an additional 2 pin power connector semi-attached, which can either be combined to become an 8-pin ATX cable or kept separate to work with 6-pin-only connections. If you have a power supply that has two free 4 pin molex power connectors, but your video card requires a 6 pin 12V power connector, you can use an adapter. Continue Reading 4 pin Motherboard Power Connector Pinout Use a Multimeter to Test Your Power Supply Pinout for the Standard ATX 24 pin 12V Motherboard Power Connector How to Test Your Power Supply With a PSU Tester Pinout Tables for ATX v2.2 Power Supply Connectors What You Need to Know About SATA 15-Pin Power Connector Pinouts 4-pin Peripheral Power Connector Pinout Why It's Important to Make Sure You Use an ATX 12V PSU Floppy Drive 4 pin Power Connector Pinout Power Supply Voltage Tolerances Make Sure You Get the Right Power Supply for Your PC Things to Consider When Picking a Motherboard for Your PC The 8 Best Power Supplies of 2019 PATA: Everything You Need to Know Best Video Cards from $350 to $1000 for PC Gaming What Does the Inside of Your PC Look Like?