I can confirm the issue with gigabyte mother boards. I was so looking forward to this product. I have a nzxt fan control and plugged into it the unit works fine but not into the cpu fan header. also depending on bios settings of the gigabyte board be aware that some system will not post without a cpu fan plugged into this plug.
board it failed on was GIGABYTE GA-870A-UD3 AM3 AMD 870



