TechnologyGuide relied on an HDTV USB outlet for power, with no operational difficulty. The included USB cable is only 5-feet long, so finding an available outlet could be an issue. That comes from either a USB input on the TV or outlet. The Chromecast requires power, as it has no battery. It also ships with a micro-to-full-sized USB cable, and power adapter. For those tight on space or in need of flexibility, the Chromecast ships with a short HDMI extender. 07 pounds, with a sturdy plastic build, but it will jut out from any HDTV input more so than most cables and adapters. The male end of an HDMI rests on one end, while an LED indicator light, small button, and microUSB input reside on the other. The Chromecast dongle itself measures about 3-inches long by 1.5-inches at its widest point.