Aaeon SBC-670S Manual page 54

This option specifies the PCI interrupt used by the primary IDE
channel on the offboard PCI IDE controller. The settings are
Disabled, INTA, INTB, INTC, INTD, or Hardwired.
This option specifies the PCI interrupt used by the secondary IDE
channel on the offboard PCI IDE controller. The settings are
Disabled, INTA, INTB, INTC, INTD, or Hardwired.
The settings of this option is No or Yes.
The settings of this option is Yes or No.