I don't need that adapter. ThinkNano computer I bought has already the adapter. Lenovo has to notify the buyers about it. Instead there is an aggressive advertising on site.. The same situation with Norton Software. ThinkNano has already Windows Defender Software. So I ordered useless items on the top of computer stuff: Adapter and Norton Secure . I called to the customer service. They promised to help but never contacted me again. Two year ago I bought a laptop from Lenovo. I am a very good customer but Lenovo customer service is not reachable if you ask for help.