At lunch time, my mother called me to call me to call me home from work at night and scolded a adapter. The old one in the house was not used now. She didn’t know what to buy so I had to buy one on the way home from work, but I was very stranger to adapter, so I got to know my mother first. What is it to use, and the previous adapter brand and model and other information, let my mother help me to send the picture, and then I went to the shop to see the boss directly, I did not think he directly gave me a adapter said this, really professional knowledge is still different, I took home and used it. Just right, I was especially impressed by the boss.