This AT&T Power Module 1 Model 3301A is a reliable and safe choice for anyone looking for a power supply. With a voltage output of 20V and 2.0A, it is compatible with a wide range of brands and devices. This power supply comes equipped with a safety isolating transformer, ensuring that your device is protected from electrical hazards. Whether you're using it for personal or professional purposes, this power module will provide the stable and consistent power output you need.