![What's the difference between 'CPU FAN' socket, 'CPU OPT' socket, and a 'SYS FAN' socket on motherboard? - Quora What's the difference between 'CPU FAN' socket, 'CPU OPT' socket, and a 'SYS FAN' socket on motherboard? - Quora](https://qph.cf2.quoracdn.net/main-qimg-4ecadff15cb9df937d1a86c1ad9f9bf1.webp)
What's the difference between 'CPU FAN' socket, 'CPU OPT' socket, and a 'SYS FAN' socket on motherboard? - Quora
![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://preview.redd.it/yk228f44mij61.jpg?width=640&crop=smart&auto=webp&s=e2338bd1fdf268f1999b0c2d91be10000aabaa28)
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
![PWM Fan 4 Pin to 3 Fanout Power Splitter Cable, Sleeved Cord Motherboard CPU SYS Fan Header to 3 Ports Internal Power Hub PWM Controller - 6 Inches - Black - Newegg.com PWM Fan 4 Pin to 3 Fanout Power Splitter Cable, Sleeved Cord Motherboard CPU SYS Fan Header to 3 Ports Internal Power Hub PWM Controller - 6 Inches - Black - Newegg.com](https://c1.neweggimages.com/ProductImageCompressAll1280/V0VZ_1_20161105631518464.jpg)