Used but working. Includes chargers. Media streamer for HDMI port. Dual Band Wi-Fi 802.11ac. Streams wirelessly. Compatible with Windows, OS X, ChromeOS, Android, and iOS. Connects to HDMI port. Fast and easy setup. WiFi 802.11 ac. Unlimited content. What is Chromecast? Chromecast is a streaming device that connects to your TV's HDMI port, allowing you to use your phone and TV to stream TV shows, movies, music, sports, games, and other entertainment.