TomTech® 45W Charger Adapter For ASUS UX21E Zenbook UX21 UX31 UX31E, 45W charger for Samsung Samsung Ativ 905S3G 915S3G 940X3G NP915S3G Book 9 ADP-45W Charger --19v2.37a 3.0 * 1.0mm (Electronics)
The tip is the right diameter and must fit into the socket of my Zenbook. Only it does not stay within the stall. I do not know if it comes from the Zenbook or not (likely it was damaged), however I thought solve this problems with this adapter.