this connectof is for the additional usb 3.0 ports, and complies with the usb 3.0 specificaton that supports up to 5.0 gbps connection speed. if the usb 3.0 front panel cable is available form your system chassis, with this usb 3.0 connector, you can have a front panel usb 3.0 solution
-you can connect the asus front panel usb 3.0 box to this connector to obtain the front panel usb 3.0 solution
-the usb 3.0 module is purchased separately.
5. digital audio connector 4-1pin spdif_out
this connector is for an additional sony philips digital interface s pdif port. connect the s pdif out module cable to this connector, then install the module to a slot opening at the back of the syste, chassis.
the s pdif module is purchased separately.