This OEM Google Chromecast power adapter is the perfect replacement for your original one. It is a USB-powered, 5V, 1.0 Amp AC adapter that is compatible with the Chromecast GA3A00097-A03-Z01 model. It is made of rigid plastic and comes in a cool gray color. The adapter measures 1.8 inches in length, 1.5 inches in width, and 0.8 inch in height. It features a USB connector and is manufactured in China. This unit comes without a cable, but it is perfect for charging and powering up your Chromecast device.
Google Chromecast - Lot of 2S005BBU0500100Cp51000 AC AdapterInput: 100-240V 50/60Hz
Output: 5V 1.0A