Brand NEW! Including 90 Days USA Factory Warranty. KAB-INT interface extension board puts the finishing touches on your Dayton Audio Bluetooth amp board project by conveniently adding a power switch, stereo 3.5 AUX in jack, and two USB ports for charging external devices. Key Features ? Adds many features with one simple connection ? Push button on/off switch puts amp in standby mode to save power ? Two USB ports have 2A combined charging capability for your media devices ? AUX-in 3.5 mm jack for connecting amp to non-Bluetooth sources ? Includes 19" interconnect cable for quick hook up ? Ground noise isolation eliminates unwanted sounds ? Two LED status indicators; red and green The Dayton Audio KAB-INT provides a simple plug and play solution for custom applications. This interface board provides a 3.5 mm AUX-in jack, two USB A female ports for charging external devices, a momentary pushbutton switch that controls the standby function, and LED indicators for power and charging status. With the included 10-pin 20" cable, the interface extension board easily plugs directly into the KAB boards. Note: The interface extension board is not designed to work with the KAB-215 Bluetooth 2 x 15W amp board. Specifications: ? Board dimensions: 1.8" H x 2.4" L x 1" W including components ? Mounting holes: 0.14" Dia. ? Distance between mounting holes: 2.11" ? USB port dimensions: 0.58" L x 0.61" H x 0.55" W ? AUX jack hole: 0.3" Dia. x 0.55 W" ? Switch dimensions: 0.5" L x 0.7" H x 0.55" W. Product Specifications Board Type Interface Special Features USB - All international buyers are responsible for all tax, duties and/or customs fees.