Use this separate HDMI transmitter if you want to wirelessly connect an extra laptop to one monitor at the same time. Buy multiple Stream T2 Pros to connect up to 20 laptops simultaneously. You switch between connected laptops with the push of a button on the HDMI transmitter. Having a meeting and sharing presentations with a large group has never been easier.Extra HDMI transmitter for the Stream S2 Pro setUse this separate HDMI transmitter to connect an extra laptop to the Stream S2 Pro set.Wireless presentation system for meeting rooms.Connect up to 20 HDMI transmitters to a single HDMI receiver and easily switch between presenters with a press of a button.Use your smart phone or tablet (Android or Apple) to stream content wirelessly to the receiver via the built-in AirPlay or Miracast function (screen mirroring).Plug & play: no app or software required.No need to connect to a (Wi-Fi) network.Plug the HDMI receiver into the HDMI input on your display or projector and power via a USB port.Plug the HDMI transmitter into the HDMI output or USB-C port on your laptop, MacBook or Chromebook without the use of an additional power cable.