Power off the Hercules controller. If you can turn off the mixer before you connect the controller, do so.
Connect the cables to the master outputs on the Hercules controller. Power on the controller.
Select a channel on the mixer that you plan to use for the Hercules. Turn the volume fader and the gain control to zero.
Connect the cables from the Hercules output to the input at the top of the mixer channel. Ensure that they are seated properly and will not move while you are playing, otherwise loud pops or voltage spikes could damage your equipment.
Connect the Hercules to your computer using the USB cable. Boot up the computer and open your DJ software. Start a track playing and gradually increase the volume and gain on the mixer until the output is at a comfortable level.