E Connecting USB cable CAUTION: Never disconnect the cables initially connected to the USB connectors on the right. TM-C3400Z User’s Manual 11 When connecting USB devices to the USB connector, be sure to pa he cable through the groove (➀), hook the cable holder (➁), pull i rom the bottom of the rear cover (➂), and then reattach the rear over. The cable holder prevents the cables from piling on each o f the power cord or other cables are piled on each other, the rear over cannot be attached. Groove Cable holder