Wireless Transmitter Parts USB Type-C USB Type-A EN 7 Name Function A USB terminal Connects to a computer's USB port. This can be used in two ways; with a USB conversion adapter (USB-C) and without it (USB-A). When pairing with a projector or the base unit, connect to the USB-A port. B Indicator Flashing blue (quickly) The wireless transmitter is connected to the computer and is waiting for the Epson Wireless Presentation software to launch. Lit blue The Epson Wireless Presentation software is running. Flashing blue (slowly) The input source from the computer is being projected. Lit orange An error has occurred. Close the software and disconnect the wireless transmitter from your computer.