I get it.... they are not the ribbon type, like the 40 wire hd type, but cables that plug to the connectors in the back of the computer. This was the old solution, to bring the USB and firewire connectors to the front of the case. The more elegant way is to connect a ribbon cable to the extra USB/Firewire headers.
The headers are metal wire spikes (in this case 9 or 10 them aprox. 1 cm long) sticking up from the motherboard where you connect a ribbon cable to.
Check Specs under "Internal I/O Connectors"
IT7 Max2 Ver2
You can always snake the cables out a hole in the rear of the case and connect them externally.