I possess an A320M-Sh2 motherboard with just two fan connectors for the CPU and SYS components
I possess an A320M-Sh2 motherboard with just two fan connectors for the CPU and SYS components
Your setup allows for a smooth upgrade. Using PWM fans on your A320m-sh2 will improve efficiency. Daisy chaining CPU fans to the header and using a fan hub for the SYS fan won't cause issues. The push-pull fans in your tower cooler should work fine with the new configuration.
It should likely stop once you exceed the header's display limit
This statement suggests that using two fans together for a single header will work perfectly.