The Delta Electronics Model ADP-90SB AC/DC Adapter Power Supply is a versatile device designed to provide power to a variety of electronic devices. With a voltage output of 20V and an amperage of 4.5A, this adapter is compatible with a universal range of brands, making it a convenient and reliable choice for powering laptops, desktops, and other electronics. Manufactured by Delta Electronics, a trusted brand in power supply technology, this adapter ensures efficient and stable power delivery for your devices.