The Asus 04G2660031T3 is an AC adapter for powering a compatible Asus notebook. It is rated at 65W and 19V and has a 3-pin connection. The connector is identified as 5.5PHI, a useful detail when checking whether this particular adapter matches the notebook.
The adapter serves as an external power source between an appropriate mains lead and the notebook. Its part number identifies this specific variant and can help when replacing an adapter with the same part number. It can also power a compatible notebook at a desk or work area.
The power cord is not included. The listing describes the adapter without a cord, so a suitable mains lead is separate. Confirmed details are its notebook use, 65W and 19V rating, 3-pin connection, 5.5PHI connector identification, and part number 04G2660031T3.