#MOLEX POWER CONNECTOR WIRING DIAGRAM MANUAL#

#MOLEX POWER CONNECTOR WIRING DIAGRAM MANUAL#

Use the above information and look in your power supply's manual to make sure that you are connecting a sufficient wattage or amperage to these adaptors. If you are going to use any of these adaptors, you need to check the power supply and its power distribution to its rails and the available connectors. For the CPU power connectors, the 4 pin connector has two 12 volt lines, so it needs 80 watts (6.7 amps), and the 8 pin adaptor has four 12 volt lines, so it requires 160 watts (13.3 amps). For the graphics card power connectors, the 6 pin adaptor has two 12 volt lines, so it needs 80 watts (6.7 amps), and the 8 pin adaptor has three 12 volt lines, so it requires 120 watts (10 amps). Each GPU and CPU adaptor's 12 volt line needs about 40 watts (3.3 amps) from the power supply this is NOT standardized by PCI-SIG. Each IDE Molex power plug (coming from the power supply) only has one 12 volt line. Sometimes they are supplied with the products that use them, and they are also readily available on the web. The 6 and 8 pin adaptors and their power ratings: The 6 and 8 pin adaptors are called Y-adapters because they each have two 4 pin IDE Molex power receptacles. Current starvation causes overheating, errors, and failures. ** There is no such thing as making too much wattage available, the device will only use what it needs your only worry is not supplying enough wattage.

There is one exception, grounds that go to sensor sensor is a separate circuit within the device. All grounds come from one point and go into one point on each device. Multiple connections only increase wattage availability. All ground connections are connected to earth ground, there is only one ground. ** The way this system works is, many wires (around 16 gauge) are used, the wire system is easily customizable by adding multiple wires until the wattage availability exceeds the devices needs. All of the power comes from one point in the power supply, and goes into one point on each device. This is the same rule for the CPU and GPU inputs. Even if there are multiple rails, all 12 volt lines come from the same place. Understanding how the system is set up: In a power supply, there is only one circuit that generates 12 volt DC. This is not the only mistake that you can make. If the connection is difficult to make, double check the plug keys. Power supply manufacturers normally mark these connectors with tags, never tear these tags off and never force the connection. You will have permanently damaged several very expensive components that you will now need to replace.

If you make the mistake of forcing the connection, when you apply power, you may see a white cloud form around the power supply and the graphics card or main board the damage will be extensive.

Even though they are keyed differently they do look very similar and it is possible to force a plug into the wrong receptacle. The white smoke of death: As you can see by the plug illustrations in the middle of this guide, the 8 pin plug for the CPU power that plugs into the main board (ESP-12V) is completely incompatible with the PCIe graphics card’s power connection. The purpose of this article is to save you a lot of research time, and turn you into an expert by giving you good reliable information. I pooled of this information into one easy to understand writing, then made an illustration to go with it. Being an electrical technician with 35 years experience, I myself, have a good working knowledge of this subject. I looked at how reputable the source was, and how often I saw other reputable sources give the same answer. I did a lot of research and found conflicting answers.

I, at one time had a lot of questions about there power connectors, their current rating, the cross compatibility, jumper wires and unorthodox looking configurations, and what adaptors are safe to use. A CPU is a “Central Processing Unit”, it is located on the main board. Is the connections we are making, bad for our devices?Ī mistake like this can cost you a lot of money.Ī GPU is a “Graphics Processing Unit”, it is located in the video card.

Molex power connector wiring diagram