ClickShare Buttons put the "Click" into ClickShare. Plug one of these USB devices into your laptop, start the application and click the button, and you are ready to share your content using the meeting room's AV equipment. To ensure that your content is displayed on the right screen, every ClickShare Button is paired with a ClickShare Base Unit. The pairing process is quick and simple, so ClickShare Buttons can be transferred across meeting rooms without a problem. Multiple ClickShare Buttons can be paired to the ClickShare Base Unit, and depending on the Base Unit, one can share with up to eight people on-screen at the same time. The classy ClickShare Tray holds the Buttons when they are not in use. Up to four Buttons fit in one Tray. For ClickShare CS-100, ClickShare CSE-200, ClickShare CSC-1, and ClickShare CSE-800