PSU:Corsair PSU FAQ
Q: What does the switch on the back of the PSU do?
A: The switch on the back of your PSU is typically labeled with an "I" (for on) and an "O" (for off). When you flip the switch to the "I" position, it allows the PSU to receive power from the electrical outlet. However, this does not automatically turn on your computer.
Q: How do I turn on my PC?
A: Ensure the PSU switch is set to "I" (on) then press the power button on the front or top of your PC case. This will send a signal to the motherboard, telling the PSU to supply power to the system, and your PC should start up.
Q: I'm experiencing issues with my PSU, how can I troubleshoot the issue?
A: To troubleshoot problems with your CORSAIR PSU, follow these steps from our PSU guide here: How to: Test a PSU (Power Supply Unit). If you experience continued issues after troubleshooting please contact our Customer Support team.
Q: What are the Pinout diagrams for CORSAIR PSUs?
A: For Pinout diagram information for our CORSAIR PSUs please read this article here: CORSAIR PSU Pinout Diagram
Q: My Type-5 PSU shows that it requires Type-4 PSUs?
A: A small number of RMx Shift PSUs were incorrectly printed with verbiage indicating that they only support Type-4 PSU cables. This is an error, as the RMx Shift PSU is actually fitted with CORSAIR Type 5 micro-fit cables only. More information can be found here: My RMx Shift PSU states it requires Type 4 cables
Q: What does Zero-RPM mean?
A: Certain CORSAIR power supply units have a zero RPM mode. This feature allows for the PSU fan to be completely off when it is not needed and will automatically turn the fan on when your PC reaches a certain temperature..
Q: My PSU is not turning on the fan despite hitting higher temperatures during use.
A: If your PSU fans are not turning on during use, please contact our Customer Support team.
Q: How can I adjust my i-series PSU within iCUE?
A: To customize your i-series PSU, please read this article here: Customizing your i-series PSU in iCUE
Q: I'm missing a PSU cable/my cable is broken, what can I do?
A: Please contact our Customer Support team to assist with replacing your cable.
Q: My cables have black markings on them, is it safe to use?
A: CORSAIR PSU cables are often tested to make sure that they are pinned correctly. When the cable passes the test, it is marked with a Sharpie Marker to show that is has been tested and passed. For more information can be found here: What are these black markings on my CORSAIR PSU cables?
Q: What are the compatibility differences between our "Type" cables?
A: The only difference between Type 3 and Type 4 cables is the pinout of the 24-pin ATX cable; all other cables (SATA, PCIe, etc) are the same. Type 5 cables are Micro fitted and are not compatible with Type 3 and Type 4 PSUs. For more information can be found here: PSU Cable Compatibility
Q: What is coil whine?
A: When current through an inductor changes, the magnetic field around the inductor also changes. This causes a small attraction/repulsion action in the coils of the inductor, which manifests itself as a vibration/sound.
Coil whine is not exactly a defect, but rather a byproduct of the components working as intended. If you have any questions or concerns regarding your PSU's Coil whine, please contact our Customer Support team.
Q: What is this white greasy stuff in my CORSAIR PSU?
A: Power supply units (PSUs) utilize white thermal compound to enhance heat transfer between components such as MOSFETs and diodes and the heat sinks they are attached to. This compound reduces thermal resistance, ensuring efficient cooling, and enhancing the PSU's overall performance and reliability.
Q: What is this goo in my CORSAIR PSU?
A: This is RTV (room temperature vulcanizing) silicone. It’s a glue-like substance used to keep heavier parts in place on the PCB during transit. It is also sometimes used in magnetic components to help reduce coil whine. The color of the RTV can be white, black or gray.
Q: Why does my CORSAIR PSU smell "bad"?
A: It`s normal for new Transformers to release some harmless odors from the varnish impregnation used in the coils for a week or two after energization. Older Transformers can also release some odor if loaded to a higher level than they have experienced previously in their history.
If you have an questions or concerns about the smell coming from your CORSAIR PSU, please contact our Customer Support team.
Q: Why does my PC “shock” me?
A: If your mains (the power coming from the wall) are not grounded, there will be 3.5mA of power looking for a ground. When you touch a metal part of the PC, you become that ground. It’s perfectly safe, and normal, but you really should use a grounded outlet.
Power supplies use “Y” capacitors connected from the neutral to ground as part of their integral EMI filter. These specially rated capacitors provide a low impedance path to the ground for high frequency noise to reduce EMI.