This oem motherboard doesn’t have internal usb 2.0 9 pin header.  It has USB 3.0 header only. You may need to use a third party add in expansion card to make a 9 pin.
Hi All, I am going to add a remote switch for my Aurora r12. The control box of this switch requires to be connected to the 9 pin connector on the motherboard to get power, however, I cannot find it. Service Manual  
Aurora R12, motherboard USB 9 pin connector