Our laptop power supply AC adapter / charger laptop power supply AC adapter / charger is the highest quality power cord, you can buy this special model. The charger is made of the highest quality material to ensure the highest level of safety, reliability and efficiency. This product is guaranteed to meet or exceed the original specifications. The notebook power adapter is guaranteed to work with Asus Transformer Book laptops when you see the oem part number of the adapter (printed on the adapter label) or the notebook model in the compatible list. The list may not be complete because it is difficult to collect all the information at once. If you are unsure of your choice, please enter the part number and model at checkout as a special note in our shipping order. We will ship the correct adapter to you according to your input. Or you can click here to tell us your part # or model #.