Small assembly is a complete infrared PORT module for a Laptop computer. The part # is G8UAP made by NEC. It consists of a 2 bubble opto device (one bubble is an IR LED the other is the IR sensor) and all associated circuitry, all on a 1 1/8" x 1/2" circuit board. These are brand new prime modules with all components and a flexible input cable. There are only 4 active leads: +, -, output, IR LED. We show you a diagram where these leads are, however we do not have the data sheet or any other info on how to use these. Looks like it would make a great "eye" for a Robot or make custom accessories for your IR compliant palmtop or laptop computer. Brand new - Prime! G9229