[SOLVED] Maximus X Hero CPU_FAN

Solution
Top of the board near the middle there are 3 fan headers, AIO_Pump CPU_OPT, and CPU_FAN.

Use the manual that came with your motherboard or consult https://www.asus.com/us/Motherboards/ROG-MAXIMUS-X-HERO/HelpDesk_Manual/ for diagrams. Nowadays the manufacturers do a really good job of getting you through the basics.
Top of the board near the middle there are 3 fan headers, AIO_Pump CPU_OPT, and CPU_FAN.

Use the manual that came with your motherboard or consult https://www.asus.com/us/Motherboards/ROG-MAXIMUS-X-HERO/HelpDesk_Manual/ for diagrams. Nowadays the manufacturers do a really good job of getting you through the basics.
 
Solution