The ASUS 0A001-00049700 is a 65 W, 19 V AC adapter for a notebook. Its 3-pin 4PHI connector identifies this particular variant and helps distinguish it from adapters with a different connector format.
It supplies power to a compatible notebook through the matching power connection. Check that the notebook calls for this part number and connector configuration when choosing it as a replacement; the output rating also identifies the adapter’s electrical specification.
Package contents: the adapter is supplied without a power cord.