This 5V AC adapter is specially designed for use with ZTE home phone modems WF720, WF721, and WF723. It is compatible with AT&T and is perfect for those who need a replacement or an extra adapter for their home or office. With an output current of 5.0A and output voltage of 5V, this adapter ensures reliable and efficient performance. It is easy to use and comes with all the necessary components, including the RJ-AS050200U004-A model number. This AC/DC adapter is a great addition to your monitoring power supplies and is a must-have for anyone who wants to keep their home phone modem running smoothly.