Sign in with
Sign up | Sign in
Your question

3-pin connector, 2 pins on card?

Last response: in Graphics & Displays
Share
March 12, 2011 3:38:05 PM

Hello, I bought an Accelero L2 Pro to fit on my HD5770 instead of my previous fan that was too noisy. I have now gotten the fan installed but the power supply cable is not the same. My card only has a 2-pin output but the fan has a 3-pin. What should I do?
a b ) Power supply
March 12, 2011 4:00:20 PM

The 3 pin should work fine on the 2 pin connector - the 3rd and 4th pins on the fans are only for reporting the fan speed and controlling it through the MOBO if using a 3 or 4 pin connection but they can be used on a simple 2 pin connection but will lose the ability to control the fan speed through software - IIRC the GPU will control the fan speed itself so no need for the other pins so they only use 2 pins
a b ) Power supply
March 12, 2011 4:03:16 PM

does the 3 pin connector have a black, red and yellow wires? Yellow is typically used to read the rpm of the fan. Black is ground and the red positive voltage. The connector on the card only has ground and positive voltage. If you can, plug in the connector in a way that leaves the yellow wire unplugged while matching the black and red wires with gnd and + on the card. If the pin order is wrong, ie you cant just plug it in as is, you need to rearrange the wires on the plug to match. The wires are hold in place with small clips, use a really small screwdriver or a pin to release it and pull gently.

or, did you get some molex adapter with the cooler that you could use instead to plug it straight to the PSU?
!