The adaptor is intended for programming transmitters. It is to be connected to a USB port of your computer using a supplied cable. USB powers both the adaptor and the transmitter to be set. The transmitter is connected through the adaptor cable with a special connector. The connector shape prevents incorrect connection into the programming socket of the transmitter. Installation of the AY-USB adapter in Windows: Driver installation files for different Windows versions, help files and the RAWET STUDIO 2 software can be downloaded under the “Software” section of www.rawet.cz. The drivers are provided by FTDI, the manufacturer of the integrated circuits, for free distribution.