Will use a 4-pin splitter to connect 2 Corsair AF140 White LED fan to a single header and another 4-pin splitter to connect 2 stock Corsair 120mm fans to another header. Currently using Gigabyte GA-AB350-Gaming 3 which has five headers (Will use other three headers for Corsair H75).
The stock fans came with the case when I bought it.
Links:
http://www.gigabyte.us/Motherboard/GA-AB350-Gaming-3-rev-10#kf
http://www.corsair.com/en-us/air-series-af140-led-white-quiet-edition-high-airflow-140mm-fan
https://www.amazon.com/dp/B01N1Z3FYD?psc=1
The stock fans came with the case when I bought it.
Links:
http://www.gigabyte.us/Motherboard/GA-AB350-Gaming-3-rev-10#kf
http://www.corsair.com/en-us/air-series-af140-led-white-quiet-edition-high-airflow-140mm-fan
https://www.amazon.com/dp/B01N1Z3FYD?psc=1