USB power cable adapter included. Plugs directly into any USB port to power the kit. Use in place of our power supply when no power outlet is available or when device is confined to a remote cabinet or when the cable box is placed behind the TV.For use with -2- devices:All brands of A/V device"s and remote control (38-56kHz). Including ATT-Uverse model VIP1225 and VIP1216 (VIP2000 series and IPN4320 we suggest our IRP-BU kit. We have found that other Uverse boxes including 1225 and 2000 series work best with the IRP-BU), Scientific AtlantaSTB"s, and name brand A/V Receivers.The IR Repeater kit receiver is permanently attached to the hub. If you need to extend the length of the kit you may use our 25ft mono extension cable to extend the emitter length. http://www.amazon.com/gp/product/B0031HP0M2 Excellent IR receiving range. IR Filtering Technology effectively blocks out external noise. Infrared Interference (IRI) Compact Fluorescent Lamp (CFL) Electro-Static Interference (ESI) and Plasma TV and eliminate Sunlight etc. Electro-Magnetic Interference (EMI) Plasma TV, Sunlight.We have eliminated the connector block as required with current IR Repeater Kits. This enables a clean and simple install!Operates with up-to-date Set Top Boxes without any problem and has a Self Auto Test function for the IR sensor. The IR sensor will automatically test itself. The Red LED will blink two times when the power is plugged in if everything is OK.KIT INCLUDES: IR Sensor with 9ft lead x1 IR Emitter x2 Power Supply IR-P x1 USB power adapter cable