Barco ClickShare is a wireless “click to share” group collaboration system for your conference room meetings and presentations. The system consists of a base unit that plugs into your display, and buttons that plug into your USB port that you can click to gain priority and share your content. There are two systems, the CSC-1 and CSM-1. The smaller unit is the CSM-1 which allows up to 8 simultaneous connections, while the larger CSC-1 allows up to 64 simultaneous connections and adds dual display capabilities and the ability for up to 4 people to be on 1 screen at once. The CSM-1 comes with 2 buttons while the CSC-1 comes with 4 buttons and a button tray holder.