I have a Thermalright TL C12C fan that arrived with the wire cut, and I'm trying to figure out if I can connect it to the back fan of my NZXT H3 Flow case. The wires seem to have different setups, and I'm wondering if it's possible to use a 3-pin connection from the NZXT fan and connect it to just two of the pins on the Thermalright fan, leaving the third pin disconnected. If more details are needed, I can provide pictures, but I'm having trouble posting them here.
2 Answers
It sounds like you're trying to mix up some fan wires there! Generally, you can connect the fans as long as you're careful with the pin alignment. If your Thermalright fan has a 3-pin connector but only two of those pins need power and ground, you should be fine connecting it that way. Just make sure you're matching the right pins to avoid damaging anything. It might be a good idea to double-check the fan's specs to confirm that it's compatible! If you have pictures elsewhere, consider sharing links to those so we can see exactly what you're working with!
If you're in a bind, I recommend using zip ties to secure the fans together instead of worrying about the wiring. Just run the zip ties through the mounting holes until they're tight enough to hold the fans against the metal of your case. This can be a temporary fix while you sort out the wiring issue. Just make sure they're snug so they stay in place! If you've got more specific details, that could help us assist you better.

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