What's the difference between 'CPU FAN' socket, 'CPU OPT' socket, and a 'SYS FAN' socket on motherboard? - Quora
![Amazon.com: Bewinner 4-Pin PWM Fan Hub, 4-pin Male for CPU Fan PC Fans Hub, Computer CPU/Case Fan Power Multi Splitter Connector Cable Adapter for 12V Computer 3-pin 4-pin Fans : Electronics Amazon.com: Bewinner 4-Pin PWM Fan Hub, 4-pin Male for CPU Fan PC Fans Hub, Computer CPU/Case Fan Power Multi Splitter Connector Cable Adapter for 12V Computer 3-pin 4-pin Fans : Electronics](https://m.media-amazon.com/images/I/61DAX5GYMUL.jpg)
Amazon.com: Bewinner 4-Pin PWM Fan Hub, 4-pin Male for CPU Fan PC Fans Hub, Computer CPU/Case Fan Power Multi Splitter Connector Cable Adapter for 12V Computer 3-pin 4-pin Fans : Electronics
![Stupid prebuilt had the Aio 3 pin plugged into "cpu fan" and the radiator fan plugged into "sys fan1" because the cord looks like it was too short to reach the "cpu Stupid prebuilt had the Aio 3 pin plugged into "cpu fan" and the radiator fan plugged into "sys fan1" because the cord looks like it was too short to reach the "cpu](https://i.redd.it/yk228f44mij61.jpg)
Stupid prebuilt had the Aio 3 pin plugged into "cpu fan" and the radiator fan plugged into "sys fan1" because the cord looks like it was too short to reach the "cpu
![Question - Looking for a fan with a 2 pin connector... but which 2 pin connector do I use? | Tom's Hardware Forum Question - Looking for a fan with a 2 pin connector... but which 2 pin connector do I use? | Tom's Hardware Forum](https://forums.tomshardware.com/proxy.php?image=https%3A%2F%2Fstatic.tweaktown.com%2Fcontent%2F8%2F2%2F8245_999_fan-control-guide-intel-z270-motherboard-edition_full.jpg&hash=452a4570c9b388935f3ee44391bb144a)