Use the supplied USB cable to connect the USB 2.0 4-Port Sender Unit to the USB host (source) device. Connect the USB devices to the Receiver Unit. Use a CAT-5 cable to connect the Sender Unit to the Receiver Unit. Connect the included locking 5VDC 4A power supply to the Receiver Unit, then connect the power cable to an available electrical outlet. The LED indicators on the Sender Unit and the Receiver Unit provide status on power and data transmission activity.