If a PC case has support for 6 fans and I install 6 fans, how would I be able to power all of them as most motherboards only have 3 4-pin connectors? - Quora
5.25" Bay 6-Channel Fan Controller, on/off Switch - Black - Akust
Source ALSEYE hot sell Alseye DA0205 manufacture pc front panel 6 Channel temperature based pwm fan speed controller on m.alibaba.com
Akasa FC SIX Brushed Aluminum 6-Channel Fan Controller Version 2 - Black AK-FC-08BKV2