If you've got the 3M SCP716W Super Close Projection System but you need more connectivity options the 3M SCP I/O V3 Module f/ SCP716W is exactly what you need.
You can easily install this input/output module on the wall below the projector. It not only provides a host of additional connectivity options, it allows you to control basic projector operations like power, volume control, input source and menu control, to use the OSD (on-screen display).
Custom-designed for the 3M SCP716W.
Provides a second RGB computer port which can double as a component input for high-quality video.
Computer RGB output allows the presenter to sit in the back of the room, if desired, watching the presentation on a monitor.
Two USB 1.1 ports for connection to USB-compatible digital devices like flash drives, camcorders, digital camcorders and more.