Lenovo has unveiled its own media sharing device to keep up with the Chromecasts and Roku Streaming Sticks of the world. But the Lenovo Cast differs considerably from Google's similarly named device, and not just because it looks like a puck instead of a stick. You start by plugging it into the HDMI port of your TV or monitor (it supports HDMI 1.3) and sync up with your WiFi network, like similar products. But from there, it taps into your DNLA or Miracast-enabled smartphone, tablet or laptop, to output up to 1080P video to your big screen. That's unlike the Chromecast, which uses its proprietary (though ubiquitous) Chrome browser environment.