Ambient Weather WR-AC2 UL Rated USB to AC Adapter for Small Electronics Devices Connect your USB device to AC power with the UL rated AC converter. Eliminates the need to connect to the computer USB port. USB cable shown not included. Image may vary slightly from actual product. Compatible with most emergency weather radios from Ambient Weather. Output: 5V, 2.1A (when 1 USB plug used), 1A each (when 2 USB plugs used)